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CVE-2026-63944 #16272
openeuler-ci-bot创建于  7月20日
openeuler-ci-bot
openeuler-ci-bot成员
7月20日 创建

一、漏洞信息
漏洞编号:CVE-2026-63944
漏洞归属组件:kernel
漏洞归属的版本:4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.12.33,6.18.18,6.4.0,6.6.0
CVSS评分:
BaseScore:8.8 High
Vector:CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
漏洞简述:
In the Linux kernel, the following vulnerability has been resolved:Bluetooth: hci_sync: fix UAF in hci_le_create_cis_synchci_le_create_cis_sync() dereferences conn->conn_timeout after releasingboth rcu_read_lock() and hci_dev_lock(hdev). The conn pointer wasobtained from an RCU-protected iteration over hdev->conn_hash.list andis not valid once these locks are dropped. A concurrent disconnect canfree the hci_conn between the unlock and the dereference, causing ause-after-free read.The cancellation mechanism in hci_conn_del() cannot prevent this becausehci_le_create_cis_pending() queues hci_create_cis_sync with data=NULL: hci_cmd_sync_queue(hdev, hci_create_cis_sync, NULL, NULL);While hci_conn_del() dequeues with data=conn: hci_cmd_sync_dequeue(hdev, NULL, conn, NULL);Since NULL != conn, the lookup in _hci_cmd_sync_lookup_entry() nevermatches, and the pending work item is not cancelled.Fix this by saving conn->conn_timeout into a local variable while thelocks are still held, so the stale conn pointer is never dereferencedafter unlock.This is the same class of bug as the one fixed by commit 035c25007c9e( Bluetooth: hci_sync: Fix UAF on le_read_features_complete ) whichaddressed the identical pattern in a different function.This vulnerability was identified using 0sec.ai, an open-sourceautomated security auditing platform (https://github.com/0sec-labs).
漏洞公开时间:2026-07-20 00:17:12
漏洞创建时间:2026-07-20 10:17:13
漏洞详情参考链接:
https://nvd.nist.gov/vuln/detail/CVE-2026-63944

更多参考(点击展开)
参考来源 参考链接 来源链接
https://lore.kernel.org/linux-cve-announce/2026071953-CVE-2026-63944-d15d@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2026-63944
https://git.kernel.org/stable/c/a921957d39290143629eb38c4f74b9bef8035d0a
https://bugzilla.redhat.com/show_bug.cgi?id=2502413
https://git.kernel.org/stable/c/bfea6091e0fffb270c20e74384b660910277eb6c
https://git.kernel.org/stable/c/a55618c0f4cead9e59c63f5ee030d393fd70d861
https://www.cve.org/CVERecord?id=CVE-2026-63944
https://git.kernel.org/stable/c/380e67b1794a9a281a0cb592b4e62077fbd0c8ca
https://git.kernel.org/stable/c/d9019210c8c30d40eb20094274cc647e352f48f7

漏洞分析指导链接:
https://atomgit.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
漏洞数据来源:
七彩瞬析开源风险感知平台
漏洞补丁信息:

详情(点击展开)
影响的包 修复版本 修复补丁 问题引入补丁 来源
gregkh/linux https://git.kernel.org/stable/c/a55618c0f4cead9e59c63f5ee030d393fd70d861 ljqc
gregkh/linux https://git.kernel.org/stable/c/a921957d39290143629eb38c4f74b9bef8035d0a ljqc
gregkh/linux https://git.kernel.org/stable/c/d9019210c8c30d40eb20094274cc647e352f48f7 ljqc
gregkh/linux https://git.kernel.org/stable/c/380e67b1794a9a281a0cb592b4e62077fbd0c8ca ljqc
gregkh/linux https://git.kernel.org/stable/c/bfea6091e0fffb270c20e74384b660910277eb6c ljqc
https://git.kernel.org/stable/c/a921957d39290143629eb38c4f74b9bef8035d0a cvelistv5
https://git.kernel.org/stable/c/bfea6091e0fffb270c20e74384b660910277eb6c cvelistv5
https://git.kernel.org/stable/c/a55618c0f4cead9e59c63f5ee030d393fd70d861 cvelistv5
https://git.kernel.org/stable/c/380e67b1794a9a281a0cb592b4e62077fbd0c8ca cvelistv5
https://git.kernel.org/stable/c/d9019210c8c30d40eb20094274cc647e352f48f7 cvelistv5

二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:Bluetooth: hci_sync: fix UAF in hci_le_create_cis_synchci_le_create_cis_sync() dereferences conn->conn_timeout after releasingboth rcu_read_lock() and hci_dev_lock(hdev). The conn pointer wasobtained from an RCU-protected iteration over hdev->conn_hash.list andis not valid once these locks are dropped. A concurrent disconnect canfree the hci_conn between the unlock and the dereference, causing ause-after-free read.The cancellation mechanism in hci_conn_del() cannot prevent this becausehci_le_create_cis_pending() queues hci_create_cis_sync with data=NULL: hci_cmd_sync_queue(hdev, hci_create_cis_sync, NULL, NULL);While hci_conn_del() dequeues with data=conn: hci_cmd_sync_dequeue(hdev, NULL, conn, NULL);Since NULL != conn, the lookup in _hci_cmd_sync_lookup_entry() nevermatches, and the pending work item is not cancelled.Fix this by saving conn->conn_timeout into a local variable while thelocks are still held, so the stale conn pointer is never dereferencedafter unlock.This is the same class of bug as the one fixed by commit 035c25007c9e("Bluetooth: hci_sync: Fix UAF on le_read_features_complete") whichaddressed the identical pattern in a different function.This vulnerability was identified using 0sec.ai, an open-sourceautomated security auditing platform (<ahref= https://github.com/0sec-labs >https://github.com/0sec-labs).The Linux kernel CVE team has assigned CVE-2026-63944 to this issue.
openEuler评分:
8.8
Vector:CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
受影响版本排查(受影响/不受影响):
1.master(6.18.40):不受影响
2.openEuler-20.03-LTS-SP4(4.19.90):不受影响
3.openEuler-22.03-LTS-SP4(5.10.0):不受影响
4.openEuler-24.03-LTS-Next(6.6.0):不受影响
5.openEuler-24.03-LTS-SP1(6.6.0):受影响
6.openEuler-24.03-LTS-SP3(6.6.0):受影响
7.openEuler-24.03-LTS-SP4(6.6.0):受影响
8.openEuler-22.03-LTS-SP3(5.10.0):受影响
9.openEuler-24.03-LTS(6.6.0):受影响
10.openEuler-24.03-LTS-SP2(6.6.0):受影响

修复是否涉及abi变化(是/否):
1.master(6.18.40):否
2.openEuler-20.03-LTS-SP4(4.19.90):否
3.openEuler-22.03-LTS-SP4(5.10.0):否
4.openEuler-24.03-LTS-Next(6.6.0):否
5.openEuler-24.03-LTS-SP1(6.6.0):否
6.openEuler-24.03-LTS-SP3(6.6.0):否
7.openEuler-24.03-LTS-SP4(6.6.0):否
8.openEuler-22.03-LTS-SP3(5.10.0):否
9.openEuler-24.03-LTS(6.6.0):否
10.openEuler-24.03-LTS-SP2(6.6.0):否

原因说明:
1.master(6.18.40):不受影响-漏洞代码不能被攻击者触发
2.openEuler-20.03-LTS-SP4(4.19.90):不受影响-漏洞代码不存在
3.openEuler-22.03-LTS-SP4(5.10.0):不受影响-漏洞代码不存在
4.openEuler-24.03-LTS-Next(6.6.0):不受影响-漏洞代码不能被攻击者触发
5.openEuler-24.03-LTS-SP1(6.6.0):正常修复
6.openEuler-24.03-LTS-SP3(6.6.0):正常修复
7.openEuler-24.03-LTS-SP4(6.6.0):正常修复
8.openEuler-22.03-LTS-SP3(5.10.0):不修复-超出修复范围
9.openEuler-24.03-LTS(6.6.0):不修复-超出修复范围
10.openEuler-24.03-LTS-SP2(6.6.0):不修复-超出修复范围

likedislike
openeuler-ci-botopeneuler-ci-bot成员
7月20日 添加了label:CVE/UNFIXED
openeuler-ci-bot
openeuler-ci-bot成员
7月20日 评论:

issue处理注意事项:
1. 提交正常修复分支的修复PR时,必须关联当前issue,否则无法关闭当前issue;
2. 模板内容需要填写完整, 无论是受影响或者不受影响都需要填写完整内容;
3. 以下为模板中需要填写完整的内容, 请复制到评论区回复;
注: 内容的关键词(影响性分析说明, openEuler评分, 受影响版本排查(受影响/不受影响), 修复是否涉及abi变化(是/否), 原因说明)不能省略,省略后cve-manager将无法正常解析填写内容.


影响性分析说明:

openEuler评分: (评分和向量)

受影响版本排查(受影响/不受影响):
1.master(6.18.18):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP4(5.10.0):
4.openEuler-24.03-LTS-Next(6.6.0):
5.openEuler-24.03-LTS-SP1(6.6.0):
6.openEuler-24.03-LTS-SP3(6.6.0):
7.openEuler-24.03-LTS-SP4(6.6.0):

修复是否涉及abi变化(是/否):
1.master(6.18.18):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP4(5.10.0):
4.openEuler-24.03-LTS-Next(6.6.0):
5.openEuler-24.03-LTS-SP1(6.6.0):
6.openEuler-24.03-LTS-SP3(6.6.0):
7.openEuler-24.03-LTS-SP4(6.6.0):

原因说明:
1.master(6.18.18):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP4(5.10.0):
4.openEuler-24.03-LTS-Next(6.6.0):
5.openEuler-24.03-LTS-SP1(6.6.0):
6.openEuler-24.03-LTS-SP3(6.6.0):
7.openEuler-24.03-LTS-SP4(6.6.0):


原因说明填写请参考下方表格(注意:版本是否受影响和版本的原因说明必须对应,例如master版本分支受影响,那原因说明只能是受影响对应的原因之一!):

分支状态
原因说明 使用场景
受影响 正常修复 受影响且需要修复(包含升级版本修复)的漏洞;
受影响且已经修复的漏洞(历史修复PR也需要关联issue);
若因特殊原因无法修复,应修改原因说明为【不修复-特殊原因】,并在安委会备案相关情况。
受影响 漏洞仍在分析中 已关注到相关漏洞,正在处理,未明确漏洞影响和修复方案。
受影响 暂不修复-暂无解决方案或补丁 当前没有可用的修复或补救措施。【影响性分析】中应包含有关为什么没有修复或补救措施的详细说明、上游相关PR等。
受影响 不修复-超出修复范围 没有漏洞的修复计划。当版本停维、软件包宣布生命周期终止或弃用使用。
受影响 不修复-特殊原因导致不再修复 如存在其他特殊情况不修复相关漏洞,或评估后无法升级修复,应在openEuler社区安全委员会例会进行说明备案。
【影响性分析】中应包含不发布修复的详细说明、特殊情况还应有安委会会议纪要。
不受影响 不受影响-组件不存在 软件不受影响,因为易受攻击的组件不在产品中。
不受影响 不受影响-已有内置的内联控制或缓解措施 内置的内联控制或缓解措施可防止攻击者利用漏洞
不受影响 不受影响-漏洞代码不能被攻击者触发 易受攻击的组件存在,并且该组件包含易受攻击的代码。但是,易受攻击的代码的使用方式使得攻击者无法进行任何预期的攻击。
不受影响 不受影响-漏洞代码不在执行路径 易受影响的代码在执行过程中不可访问,包括产品的非预期状态。产品不使用也不执行的组件。
不受影响 不受影响-漏洞代码不存在 产品不受影响,因为漏洞背后的代码在产品中不存在。与component_not_present不同的是,有问题的组件存在,但由于某种原因(例如安全的编译器选项)使漏洞的特定代码不存在于组件中。

issue处理具体操作请参考:
https://atomgit.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
pr关联issue具体操作请参考:
https://docs.atomgit.com/docs/help/home/org_project/pullrequests/pr-related-issue

likedislike
devstation-robot
devstation-robot
7月20日 评论:

检测到新建 CVE Issue,CVE-ID: CVE-2026-63944

你可以通过以下两种方式使用 CVE 修复服务:

  1. 分支影响分析

    • 在本 Issue 下评论:/analysis_branches
    • 系统将自动分析各个分支是否受影响,并在本 Issue 下给出表格形式的分析结果;
  2. 在指定分支上创建 PR(修复提交)

    • 在本 Issue 下按如下格式评论(字段均为必填,每个字段单独一行):
/create_pr

branch: OLK-6.6 OLK-5.10
name: dev
email: dev@devstation.com
  • 说明:
    • branch: 需要创建 PR 的目标分支列表,例如 OLK-6.6 OLK-5.10
    • name: PR 签名人姓名(如责任人或安全负责人);
    • email: PR 签名人邮箱;

系统会根据上述信息自动在指定分支上创建 PR,并在本 Issue 下反馈结果。

provided by DevStation.

likedislike
openeuler-ci-botopeneuler-ci-bot成员
7月20日 添加了label:sig/Kernel
openeuler-ci-bot
openeuler-ci-bot成员
7月20日 评论:

Welcome To openEuler Community

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likedislike
openeuler-ci-bot
openeuler-ci-bot成员
7月20日 评论:
参考网址 关联pr 状态 补丁链接
https://www.opencve.io/cve/CVE-2026-63944NoneNonehttps://git.kernel.org/stable/c/380e67b1794a9a281a0cb592b4e62077fbd0c8ca
https://git.kernel.org/stable/c/d9019210c8c30d40eb20094274cc647e352f48f7
https://git.kernel.org/stable/c/bfea6091e0fffb270c20e74384b660910277eb6c
https://git.kernel.org/stable/c/a55618c0f4cead9e59c63f5ee030d393fd70d861
https://git.kernel.org/stable/c/a921957d39290143629eb38c4f74b9bef8035d0a
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2026-63944
https://security-tracker.debian.org/tracker/CVE-2026-63944NoneNonehttps://git.kernel.org/linus/bfea6091e0fffb270c20e74384b660910277eb6c
http://www.cnnvd.org.cn/web/vulnerability/queryLds.tag?qcvCnnvdid=CVE-2026-63944
https://nvd.nist.gov/vuln/detail/CVE-2026-63944NoneNonehttps://git.kernel.org/stable/c/380e67b1794a9a281a0cb592b4e62077fbd0c8ca
https://git.kernel.org/stable/c/d9019210c8c30d40eb20094274cc647e352f48f7
https://git.kernel.org/stable/c/bfea6091e0fffb270c20e74384b660910277eb6c
https://git.kernel.org/stable/c/a55618c0f4cead9e59c63f5ee030d393fd70d861
https://git.kernel.org/stable/c/a921957d39290143629eb38c4f74b9bef8035d0a
https://ubuntu.com/security/CVE-2026-63944NoneNonehttps://discourse.ubuntu.com/c/project

说明:补丁链接仅供初步排查参考,实际可用性请人工再次确认,补丁下载验证可使用CVE补丁工具
若补丁不准确,烦请在此issue下评论 '/report-patch 参考网址 补丁链接1,补丁链接2' 反馈正确信息,便于我们不断优化工具,不胜感激。
如 /report-patch https://security-tracker.debian.org/tracker/CVE-2021-3997 https://github.com/systemd/systemd/commit/5b1cf7a9be37e20133c0208005274ce4a5b5c6a1

likedislike
openeuler-ci-botopeneuler-ci-bot成员
7月20日 修改了issue 的描述
hulk-ci-bot成员
7月20日 评论:

CVE-2026-63944

影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_sync: fix UAF in hci_le_create_cis_sync

hci_le_create_cis_sync() dereferences conn->conn_timeout after releasing
both rcu_read_lock() and hci_dev_lock(hdev). The conn pointer was
obtained from an RCU-protected iteration over hdev->conn_hash.list and
is not valid once these locks are dropped. A concurrent disconnect can
free the hci_conn between the unlock and the dereference, causing a
use-after-free read.

The cancellation mechanism in hci_conn_del() cannot prevent this because
hci_le_create_cis_pending() queues hci_create_cis_sync with data=NULL:

hci_cmd_sync_queue(hdev, hci_create_cis_sync, NULL, NULL);

While hci_conn_del() dequeues with data=conn:

hci_cmd_sync_dequeue(hdev, NULL, conn, NULL);

Since NULL != conn, the lookup in _hci_cmd_sync_lookup_entry() never
matches, and the pending work item is not cancelled.

Fix this by saving conn->conn_timeout into a local variable while the
locks are still held, so the stale conn pointer is never dereferenced
after unlock.

This is the same class of bug as the one fixed by commit 035c25007c9e
("Bluetooth: hci_sync: Fix UAF on le_read_features_complete") which
addressed the identical pattern in a different function.

This vulnerability was identified using 0sec.ai, an open-source
automated security auditing platform (https://github.com/0sec-labs).

The Linux kernel CVE team has assigned CVE-2026-63944 to this issue.

openEuler评分:(评分和向量)
3.9
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L

受影响版本排查(受影响/不受影响):
1.master:不受影响
2.openEuler-20.03-LTS-SP4:受影响
3.openEuler-22.03-LTS-SP3:受影响
4.openEuler-22.03-LTS-SP4:受影响
5.openEuler-24.03-LTS:受影响
6.openEuler-24.03-LTS-Next:不受影响
7.openEuler-24.03-LTS-SP1:受影响
8.openEuler-24.03-LTS-SP2:受影响
9.openEuler-24.03-LTS-SP3:受影响
10.openEuler-24.03-LTS-SP4:受影响

修复是否涉及abi变化(是/否):
1.master:否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS-SP3:否
4.openEuler-22.03-LTS-SP4:否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-24.03-LTS-SP1:否
8.openEuler-24.03-LTS-SP2:否
9.openEuler-24.03-LTS-SP3:否
10.openEuler-24.03-LTS-SP4:否

原因说明:
1.master:不受影响-漏洞代码不能被攻击者触发
2.openEuler-20.03-LTS-SP4:暂不修复-漏洞仍在分析中
3.openEuler-22.03-LTS-SP3:不修复-超出修复范围
4.openEuler-22.03-LTS-SP4:暂不修复-漏洞仍在分析中
5.openEuler-24.03-LTS:不修复-超出修复范围
6.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
7.openEuler-24.03-LTS-SP1:暂不修复-漏洞仍在分析中
8.openEuler-24.03-LTS-SP2:不修复-超出修复范围
9.openEuler-24.03-LTS-SP3:暂不修复-漏洞仍在分析中
10.openEuler-24.03-LTS-SP4:暂不修复-漏洞仍在分析中

likedislike
openeuler-ci-botopeneuler-ci-bot成员
7月20日 修改了issue 的描述
openeuler-ci-bot
openeuler-ci-bot成员
7月20日 评论:

@kaitiandu 经过 cve-manager 解析, 已分析的内容如下表所示:

状态 分析项目 内容
已分析 1.影响性分析说明 In the Linux kernel, the following vulnerability has been resolved:Bluetooth: hci_sync: fix UAF in hci_le_create_cis_synchci_le_create_cis_sync() dereferences conn->conn_timeout after releasingboth rcu_read_lock() and hci_dev_lock(hdev). The conn pointer wasobtained from an RCU-protected iteration over hdev->conn_hash.list andis not valid once these locks are dropped. A concurrent disconnect canfree the hci_conn between the unlock and the dereference, causing ause-after-free read.The cancellation mechanism in hci_conn_del() cannot prevent this becausehci_le_create_cis_pending() queues hci_create_cis_sync with data=NULL: hci_cmd_sync_queue(hdev, hci_create_cis_sync, NULL, NULL);While hci_conn_del() dequeues with data=conn: hci_cmd_sync_dequeue(hdev, NULL, conn, NULL);Since NULL != conn, the lookup in _hci_cmd_sync_lookup_entry() nevermatches, and the pending work item is not cancelled.Fix this by saving conn->conn_timeout into a local variable while thelocks are still held, so the stale conn pointer is never dereferencedafter unlock.This is the same class of bug as the one fixed by commit 035c25007c9e("Bluetooth: hci_sync: Fix UAF on le_read_features_complete") whichaddressed the identical pattern in a different function.This vulnerability was identified using 0sec.ai, an open-sourceautomated security auditing platform (<ahref="https://github.com/0sec-labs">https://github.com/0sec-labs).The Linux kernel CVE team has assigned CVE-2026-63944 to this issue.
已分析 2.openEulerScore 3.9
已分析 3.openEulerVector AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
已分析 4.受影响版本排查 master:不受影响,openEuler-20.03-LTS-SP4:受影响,openEuler-22.03-LTS-SP4:受影响,openEuler-24.03-LTS-Next:不受影响,openEuler-24.03-LTS-SP1:受影响,openEuler-24.03-LTS-SP3:受影响,openEuler-24.03-LTS-SP4:受影响,openEuler-22.03-LTS-SP3:受影响,openEuler-24.03-LTS:受影响,openEuler-24.03-LTS-SP2:受影响
已分析 5.是否涉及abi变化 master:否,openEuler-20.03-LTS-SP4:否,openEuler-22.03-LTS-SP4:否,openEuler-24.03-LTS-Next:否,openEuler-24.03-LTS-SP1:否,openEuler-24.03-LTS-SP3:否,openEuler-24.03-LTS-SP4:否,openEuler-22.03-LTS-SP3:否,openEuler-24.03-LTS:否,openEuler-24.03-LTS-SP2:否
已分析 6.原因说明 master:不受影响-漏洞代码不能被攻击者触发,openEuler-20.03-LTS-SP4:漏洞仍在分析中,openEuler-22.03-LTS-SP4:漏洞仍在分析中,openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发,openEuler-24.03-LTS-SP1:漏洞仍在分析中,openEuler-24.03-LTS-SP3:漏洞仍在分析中,openEuler-24.03-LTS-SP4:漏洞仍在分析中,openEuler-22.03-LTS-SP3:不修复-超出修复范围,openEuler-24.03-LTS:不修复-超出修复范围,openEuler-24.03-LTS-SP2:不修复-超出修复范围

请确认分析内容的准确性, 确认无误后, 您可以进行后续步骤, 否则您可以继续分析.

likedislike
openeuler-ci-botopeneuler-ci-bot成员
7月20日 issue状态由 待办的 改变为 进行中
openeuler-ci-botopeneuler-ci-bot成员
7月21日 修改了issue 的描述
hulk-ci-bot成员
7月22日 评论:

CVE-2026-63944

影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_sync: fix UAF in hci_le_create_cis_sync

hci_le_create_cis_sync() dereferences conn->conn_timeout after releasing
both rcu_read_lock() and hci_dev_lock(hdev). The conn pointer was
obtained from an RCU-protected iteration over hdev->conn_hash.list and
is not valid once these locks are dropped. A concurrent disconnect can
free the hci_conn between the unlock and the dereference, causing a
use-after-free read.

The cancellation mechanism in hci_conn_del() cannot prevent this because
hci_le_create_cis_pending() queues hci_create_cis_sync with data=NULL:

hci_cmd_sync_queue(hdev, hci_create_cis_sync, NULL, NULL);

While hci_conn_del() dequeues with data=conn:

hci_cmd_sync_dequeue(hdev, NULL, conn, NULL);

Since NULL != conn, the lookup in _hci_cmd_sync_lookup_entry() never
matches, and the pending work item is not cancelled.

Fix this by saving conn->conn_timeout into a local variable while the
locks are still held, so the stale conn pointer is never dereferenced
after unlock.

This is the same class of bug as the one fixed by commit 035c25007c9e
("Bluetooth: hci_sync: Fix UAF on le_read_features_complete") which
addressed the identical pattern in a different function.

This vulnerability was identified using 0sec.ai, an open-source
automated security auditing platform (https://github.com/0sec-labs).

The Linux kernel CVE team has assigned CVE-2026-63944 to this issue.

openEuler评分:(评分和向量)
8.8
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

受影响版本排查(受影响/不受影响):
1.master:不受影响
2.openEuler-20.03-LTS-SP4:受影响
3.openEuler-22.03-LTS-SP3:受影响
4.openEuler-22.03-LTS-SP4:不受影响
5.openEuler-24.03-LTS:受影响
6.openEuler-24.03-LTS-Next:不受影响
7.openEuler-24.03-LTS-SP1:受影响
8.openEuler-24.03-LTS-SP2:受影响
9.openEuler-24.03-LTS-SP3:受影响
10.openEuler-24.03-LTS-SP4:受影响

修复是否涉及abi变化(是/否):
1.master:否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS-SP3:否
4.openEuler-22.03-LTS-SP4:否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-24.03-LTS-SP1:否
8.openEuler-24.03-LTS-SP2:否
9.openEuler-24.03-LTS-SP3:否
10.openEuler-24.03-LTS-SP4:否

原因说明:
1.master:不受影响-漏洞代码不能被攻击者触发
2.openEuler-20.03-LTS-SP4:暂不修复-漏洞仍在分析中
3.openEuler-22.03-LTS-SP3:不修复-超出修复范围
4.openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在
5.openEuler-24.03-LTS:不修复-超出修复范围
6.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
7.openEuler-24.03-LTS-SP1:暂不修复-漏洞仍在分析中
8.openEuler-24.03-LTS-SP2:不修复-超出修复范围
9.openEuler-24.03-LTS-SP3:暂不修复-漏洞仍在分析中
10.openEuler-24.03-LTS-SP4:暂不修复-漏洞仍在分析中

likedislike
openeuler-ci-botopeneuler-ci-bot成员
7月22日 修改了issue 的描述
openeuler-ci-bot
openeuler-ci-bot成员
7月22日 评论:

@kaitiandu 经过 cve-manager 解析, 已分析的内容如下表所示:

状态 分析项目 内容
已分析 1.影响性分析说明 In the Linux kernel, the following vulnerability has been resolved:Bluetooth: hci_sync: fix UAF in hci_le_create_cis_synchci_le_create_cis_sync() dereferences conn->conn_timeout after releasingboth rcu_read_lock() and hci_dev_lock(hdev). The conn pointer wasobtained from an RCU-protected iteration over hdev->conn_hash.list andis not valid once these locks are dropped. A concurrent disconnect canfree the hci_conn between the unlock and the dereference, causing ause-after-free read.The cancellation mechanism in hci_conn_del() cannot prevent this becausehci_le_create_cis_pending() queues hci_create_cis_sync with data=NULL: hci_cmd_sync_queue(hdev, hci_create_cis_sync, NULL, NULL);While hci_conn_del() dequeues with data=conn: hci_cmd_sync_dequeue(hdev, NULL, conn, NULL);Since NULL != conn, the lookup in _hci_cmd_sync_lookup_entry() nevermatches, and the pending work item is not cancelled.Fix this by saving conn->conn_timeout into a local variable while thelocks are still held, so the stale conn pointer is never dereferencedafter unlock.This is the same class of bug as the one fixed by commit 035c25007c9e("Bluetooth: hci_sync: Fix UAF on le_read_features_complete") whichaddressed the identical pattern in a different function.This vulnerability was identified using 0sec.ai, an open-sourceautomated security auditing platform (<ahref="https://github.com/0sec-labs">https://github.com/0sec-labs).The Linux kernel CVE team has assigned CVE-2026-63944 to this issue.
已分析 2.openEulerScore 8.8
已分析 3.openEulerVector AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
已分析 4.受影响版本排查 master:不受影响,openEuler-20.03-LTS-SP4:受影响,openEuler-22.03-LTS-SP4:不受影响,openEuler-24.03-LTS-Next:不受影响,openEuler-24.03-LTS-SP1:受影响,openEuler-24.03-LTS-SP3:受影响,openEuler-24.03-LTS-SP4:受影响,openEuler-22.03-LTS-SP3:受影响,openEuler-24.03-LTS:受影响,openEuler-24.03-LTS-SP2:受影响
已分析 5.是否涉及abi变化 master:否,openEuler-20.03-LTS-SP4:否,openEuler-22.03-LTS-SP4:否,openEuler-24.03-LTS-Next:否,openEuler-24.03-LTS-SP1:否,openEuler-24.03-LTS-SP3:否,openEuler-24.03-LTS-SP4:否,openEuler-22.03-LTS-SP3:否,openEuler-24.03-LTS:否,openEuler-24.03-LTS-SP2:否
已分析 6.原因说明 master:不受影响-漏洞代码不能被攻击者触发,openEuler-20.03-LTS-SP4:漏洞仍在分析中,openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在,openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发,openEuler-24.03-LTS-SP1:漏洞仍在分析中,openEuler-24.03-LTS-SP3:漏洞仍在分析中,openEuler-24.03-LTS-SP4:漏洞仍在分析中,openEuler-22.03-LTS-SP3:不修复-超出修复范围,openEuler-24.03-LTS:不修复-超出修复范围,openEuler-24.03-LTS-SP2:不修复-超出修复范围

请确认分析内容的准确性, 确认无误后, 您可以进行后续步骤, 否则您可以继续分析.

likedislike
hulk-ci-bot成员
7月22日 评论:

CVE-2026-63944

影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_sync: fix UAF in hci_le_create_cis_sync

hci_le_create_cis_sync() dereferences conn->conn_timeout after releasing
both rcu_read_lock() and hci_dev_lock(hdev). The conn pointer was
obtained from an RCU-protected iteration over hdev->conn_hash.list and
is not valid once these locks are dropped. A concurrent disconnect can
free the hci_conn between the unlock and the dereference, causing a
use-after-free read.

The cancellation mechanism in hci_conn_del() cannot prevent this because
hci_le_create_cis_pending() queues hci_create_cis_sync with data=NULL:

hci_cmd_sync_queue(hdev, hci_create_cis_sync, NULL, NULL);

While hci_conn_del() dequeues with data=conn:

hci_cmd_sync_dequeue(hdev, NULL, conn, NULL);

Since NULL != conn, the lookup in _hci_cmd_sync_lookup_entry() never
matches, and the pending work item is not cancelled.

Fix this by saving conn->conn_timeout into a local variable while the
locks are still held, so the stale conn pointer is never dereferenced
after unlock.

This is the same class of bug as the one fixed by commit 035c25007c9e
("Bluetooth: hci_sync: Fix UAF on le_read_features_complete") which
addressed the identical pattern in a different function.

This vulnerability was identified using 0sec.ai, an open-source
automated security auditing platform (https://github.com/0sec-labs).

The Linux kernel CVE team has assigned CVE-2026-63944 to this issue.

openEuler评分:(评分和向量)
8.8
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

受影响版本排查(受影响/不受影响):
1.master:不受影响
2.openEuler-20.03-LTS-SP4:不受影响
3.openEuler-22.03-LTS-SP3:受影响
4.openEuler-22.03-LTS-SP4:不受影响
5.openEuler-24.03-LTS:受影响
6.openEuler-24.03-LTS-Next:不受影响
7.openEuler-24.03-LTS-SP1:受影响
8.openEuler-24.03-LTS-SP2:受影响
9.openEuler-24.03-LTS-SP3:受影响
10.openEuler-24.03-LTS-SP4:受影响

修复是否涉及abi变化(是/否):
1.master:否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS-SP3:否
4.openEuler-22.03-LTS-SP4:否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-24.03-LTS-SP1:否
8.openEuler-24.03-LTS-SP2:否
9.openEuler-24.03-LTS-SP3:否
10.openEuler-24.03-LTS-SP4:否

原因说明:
1.master:不受影响-漏洞代码不能被攻击者触发
2.openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在
3.openEuler-22.03-LTS-SP3:不修复-超出修复范围
4.openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在
5.openEuler-24.03-LTS:不修复-超出修复范围
6.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
7.openEuler-24.03-LTS-SP1:暂不修复-漏洞仍在分析中
8.openEuler-24.03-LTS-SP2:不修复-超出修复范围
9.openEuler-24.03-LTS-SP3:暂不修复-漏洞仍在分析中
10.openEuler-24.03-LTS-SP4:暂不修复-漏洞仍在分析中

likedislike
openeuler-ci-botopeneuler-ci-bot成员
7月22日 修改了issue 的描述
openeuler-ci-bot
openeuler-ci-bot成员
7月22日 评论:

@kaitiandu 经过 cve-manager 解析, 已分析的内容如下表所示:

状态 分析项目 内容
已分析 1.影响性分析说明 In the Linux kernel, the following vulnerability has been resolved:Bluetooth: hci_sync: fix UAF in hci_le_create_cis_synchci_le_create_cis_sync() dereferences conn->conn_timeout after releasingboth rcu_read_lock() and hci_dev_lock(hdev). The conn pointer wasobtained from an RCU-protected iteration over hdev->conn_hash.list andis not valid once these locks are dropped. A concurrent disconnect canfree the hci_conn between the unlock and the dereference, causing ause-after-free read.The cancellation mechanism in hci_conn_del() cannot prevent this becausehci_le_create_cis_pending() queues hci_create_cis_sync with data=NULL: hci_cmd_sync_queue(hdev, hci_create_cis_sync, NULL, NULL);While hci_conn_del() dequeues with data=conn: hci_cmd_sync_dequeue(hdev, NULL, conn, NULL);Since NULL != conn, the lookup in _hci_cmd_sync_lookup_entry() nevermatches, and the pending work item is not cancelled.Fix this by saving conn->conn_timeout into a local variable while thelocks are still held, so the stale conn pointer is never dereferencedafter unlock.This is the same class of bug as the one fixed by commit 035c25007c9e("Bluetooth: hci_sync: Fix UAF on le_read_features_complete") whichaddressed the identical pattern in a different function.This vulnerability was identified using 0sec.ai, an open-sourceautomated security auditing platform (<ahref="https://github.com/0sec-labs">https://github.com/0sec-labs).The Linux kernel CVE team has assigned CVE-2026-63944 to this issue.
已分析 2.openEulerScore 8.8
已分析 3.openEulerVector AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
已分析 4.受影响版本排查 master:不受影响,openEuler-20.03-LTS-SP4:不受影响,openEuler-22.03-LTS-SP4:不受影响,openEuler-24.03-LTS-Next:不受影响,openEuler-24.03-LTS-SP1:受影响,openEuler-24.03-LTS-SP3:受影响,openEuler-24.03-LTS-SP4:受影响,openEuler-22.03-LTS-SP3:受影响,openEuler-24.03-LTS:受影响,openEuler-24.03-LTS-SP2:受影响
已分析 5.是否涉及abi变化 master:否,openEuler-20.03-LTS-SP4:否,openEuler-22.03-LTS-SP4:否,openEuler-24.03-LTS-Next:否,openEuler-24.03-LTS-SP1:否,openEuler-24.03-LTS-SP3:否,openEuler-24.03-LTS-SP4:否,openEuler-22.03-LTS-SP3:否,openEuler-24.03-LTS:否,openEuler-24.03-LTS-SP2:否
已分析 6.原因说明 master:不受影响-漏洞代码不能被攻击者触发,openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在,openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在,openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发,openEuler-24.03-LTS-SP1:漏洞仍在分析中,openEuler-24.03-LTS-SP3:漏洞仍在分析中,openEuler-24.03-LTS-SP4:漏洞仍在分析中,openEuler-22.03-LTS-SP3:不修复-超出修复范围,openEuler-24.03-LTS:不修复-超出修复范围,openEuler-24.03-LTS-SP2:不修复-超出修复范围

请确认分析内容的准确性, 确认无误后, 您可以进行后续步骤, 否则您可以继续分析.

likedislike
Jackspark
7月24日 评论:

/create_pr

branch: OLK-6.6
name: chenjinghuang
email: chenjinghuang2@huawei.com

likedislike
devstation-robot
devstation-robot
7月24日 评论:

已触发 CVE 修复服务,CVE-ID: CVE-2026-63944。
provided by DevStation.

likedislike
devstation-robotdevstation-robot
7月24日 关联了pull request:Fix CVE-2026-63944
devstation-robot
devstation-robot
7月24日 评论:

已完成 CVE 修复全流程汇总,CVE-ID: CVE-2026-63944

关联修复提交信息:Bluetooth: hci_sync: fix UAF in hci_le_create_cis_sync

目标分支 是否受影响 适配状态 是否存在冲突 PR 链接
OLK-6.6 Affected success Yes 查看PR
OLK-5.10 Not affected - No -
openEuler-1.0-LTS Not affected - No -

provided by DevStation.

likedislike
openeuler-ci-botopeneuler-ci-bot成员
7月24日 修改了issue 的描述
openeuler-ci-botopeneuler-ci-bot成员
7月25日 修改了issue 的描述
openeuler-ci-botopeneuler-ci-bot成员
7月28日 关闭了 issue
openeuler-ci-botopeneuler-ci-bot成员
7月28日 重新打开了 issue
hulk-ci-bot成员
7月28日 评论:

CVE-2026-63944

影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_sync: fix UAF in hci_le_create_cis_sync

hci_le_create_cis_sync() dereferences conn->conn_timeout after releasing
both rcu_read_lock() and hci_dev_lock(hdev). The conn pointer was
obtained from an RCU-protected iteration over hdev->conn_hash.list and
is not valid once these locks are dropped. A concurrent disconnect can
free the hci_conn between the unlock and the dereference, causing a
use-after-free read.

The cancellation mechanism in hci_conn_del() cannot prevent this because
hci_le_create_cis_pending() queues hci_create_cis_sync with data=NULL:

hci_cmd_sync_queue(hdev, hci_create_cis_sync, NULL, NULL);

While hci_conn_del() dequeues with data=conn:

hci_cmd_sync_dequeue(hdev, NULL, conn, NULL);

Since NULL != conn, the lookup in _hci_cmd_sync_lookup_entry() never
matches, and the pending work item is not cancelled.

Fix this by saving conn->conn_timeout into a local variable while the
locks are still held, so the stale conn pointer is never dereferenced
after unlock.

This is the same class of bug as the one fixed by commit 035c25007c9e
("Bluetooth: hci_sync: Fix UAF on le_read_features_complete") which
addressed the identical pattern in a different function.

This vulnerability was identified using 0sec.ai, an open-source
automated security auditing platform (https://github.com/0sec-labs).

The Linux kernel CVE team has assigned CVE-2026-63944 to this issue.

openEuler评分:(评分和向量)
8.8
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

受影响版本排查(受影响/不受影响):
1.master:不受影响
2.openEuler-20.03-LTS-SP4:不受影响
3.openEuler-22.03-LTS-SP3:受影响
4.openEuler-22.03-LTS-SP4:不受影响
5.openEuler-24.03-LTS:受影响
6.openEuler-24.03-LTS-Next:不受影响
7.openEuler-24.03-LTS-SP1:受影响
8.openEuler-24.03-LTS-SP2:受影响
9.openEuler-24.03-LTS-SP3:受影响
10.openEuler-24.03-LTS-SP4:受影响

修复是否涉及abi变化(是/否):
1.master:否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS-SP3:否
4.openEuler-22.03-LTS-SP4:否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-24.03-LTS-SP1:否
8.openEuler-24.03-LTS-SP2:否
9.openEuler-24.03-LTS-SP3:否
10.openEuler-24.03-LTS-SP4:否

原因说明:
1.master:不受影响-漏洞代码不能被攻击者触发
2.openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在
3.openEuler-22.03-LTS-SP3:不修复-超出修复范围
4.openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在
5.openEuler-24.03-LTS:不修复-超出修复范围
6.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
7.openEuler-24.03-LTS-SP1:正常修复
8.openEuler-24.03-LTS-SP2:不修复-超出修复范围
9.openEuler-24.03-LTS-SP3:正常修复
10.openEuler-24.03-LTS-SP4:正常修复

likedislike
openeuler-ci-botopeneuler-ci-bot成员
7月28日 修改了issue 的描述
openeuler-ci-botopeneuler-ci-bot成员
7月28日 issue状态由 进行中 改变为 待办的
openeuler-ci-bot
openeuler-ci-bot成员
7月28日 评论:

@kaitiandu 经过 cve-manager 解析, 已分析的内容如下表所示:

状态 分析项目 内容
已分析 1.影响性分析说明 In the Linux kernel, the following vulnerability has been resolved:Bluetooth: hci_sync: fix UAF in hci_le_create_cis_synchci_le_create_cis_sync() dereferences conn->conn_timeout after releasingboth rcu_read_lock() and hci_dev_lock(hdev). The conn pointer wasobtained from an RCU-protected iteration over hdev->conn_hash.list andis not valid once these locks are dropped. A concurrent disconnect canfree the hci_conn between the unlock and the dereference, causing ause-after-free read.The cancellation mechanism in hci_conn_del() cannot prevent this becausehci_le_create_cis_pending() queues hci_create_cis_sync with data=NULL: hci_cmd_sync_queue(hdev, hci_create_cis_sync, NULL, NULL);While hci_conn_del() dequeues with data=conn: hci_cmd_sync_dequeue(hdev, NULL, conn, NULL);Since NULL != conn, the lookup in _hci_cmd_sync_lookup_entry() nevermatches, and the pending work item is not cancelled.Fix this by saving conn->conn_timeout into a local variable while thelocks are still held, so the stale conn pointer is never dereferencedafter unlock.This is the same class of bug as the one fixed by commit 035c25007c9e("Bluetooth: hci_sync: Fix UAF on le_read_features_complete") whichaddressed the identical pattern in a different function.This vulnerability was identified using 0sec.ai, an open-sourceautomated security auditing platform (<ahref="https://github.com/0sec-labs">https://github.com/0sec-labs).The Linux kernel CVE team has assigned CVE-2026-63944 to this issue.
已分析 2.openEulerScore 8.8
已分析 3.openEulerVector AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
已分析 4.受影响版本排查 master:不受影响,openEuler-20.03-LTS-SP4:不受影响,openEuler-22.03-LTS-SP4:不受影响,openEuler-24.03-LTS-Next:不受影响,openEuler-24.03-LTS-SP1:受影响,openEuler-24.03-LTS-SP3:受影响,openEuler-24.03-LTS-SP4:受影响,openEuler-22.03-LTS-SP3:受影响,openEuler-24.03-LTS:受影响,openEuler-24.03-LTS-SP2:受影响
已分析 5.是否涉及abi变化 master:否,openEuler-20.03-LTS-SP4:否,openEuler-22.03-LTS-SP4:否,openEuler-24.03-LTS-Next:否,openEuler-24.03-LTS-SP1:否,openEuler-24.03-LTS-SP3:否,openEuler-24.03-LTS-SP4:否,openEuler-22.03-LTS-SP3:否,openEuler-24.03-LTS:否,openEuler-24.03-LTS-SP2:否
已分析 6.原因说明 master:不受影响-漏洞代码不能被攻击者触发,openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在,openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在,openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发,openEuler-24.03-LTS-SP1:正常修复,openEuler-24.03-LTS-SP3:正常修复,openEuler-24.03-LTS-SP4:正常修复,openEuler-22.03-LTS-SP3:不修复-超出修复范围,openEuler-24.03-LTS:不修复-超出修复范围,openEuler-24.03-LTS-SP2:不修复-超出修复范围

请确认分析内容的准确性, 确认无误后, 您可以进行后续步骤, 否则您可以继续分析.

likedislike
openeuler-ci-bot
openeuler-ci-bot成员
7月28日 评论:

经过cve-manager解析,部分分支PR未合入,如红色字体所示:

原因说明:
1.master:不受影响-漏洞代码不能被攻击者触发
2.openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在
3.openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在
4.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
5.openEuler-24.03-LTS-SP1:正常修复(PR未合入)
6.openEuler-24.03-LTS-SP3:正常修复(PR未合入)
7.openEuler-24.03-LTS-SP4:正常修复(PR未合入)
8.openEuler-22.03-LTS-SP3:不修复-超出修复范围
9.openEuler-24.03-LTS:不修复-超出修复范围
10.openEuler-24.03-LTS-SP2:不修复-超出修复范围

likedislike
openeuler-ci-botopeneuler-ci-bot成员
7月28日 issue状态由 待办的 改变为 进行中
openeuler-ci-botopeneuler-ci-bot成员
7月29日 关闭了 issue
openeuler-ci-bot
openeuler-ci-bot成员
7月29日 评论:

经过cve-manager解析,部分分支PR未合入,如红色字体所示:

原因说明:
1.master:不受影响-漏洞代码不能被攻击者触发
2.openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在
3.openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在
4.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
5.openEuler-24.03-LTS-SP1:正常修复(PR未合入)
6.openEuler-24.03-LTS-SP3:正常修复(PR未合入)
7.openEuler-24.03-LTS-SP4:正常修复(PR未合入)
8.openEuler-22.03-LTS-SP3:不修复-超出修复范围
9.openEuler-24.03-LTS:不修复-超出修复范围
10.openEuler-24.03-LTS-SP2:不修复-超出修复范围

likedislike
openeuler-ci-botopeneuler-ci-bot成员
7月29日 重新打开了 issue
Tengda Wu
Tengda Wu成员
11 天前 评论:

/check-issue

likedislike
openeuler-ci-bot
openeuler-ci-bot成员
11 天前 评论:

@kaitiandu 经过 cve-manager 解析, 已分析的内容如下表所示:

状态 分析项目 内容
已分析 1.影响性分析说明 In the Linux kernel, the following vulnerability has been resolved:Bluetooth: hci_sync: fix UAF in hci_le_create_cis_synchci_le_create_cis_sync() dereferences conn->conn_timeout after releasingboth rcu_read_lock() and hci_dev_lock(hdev). The conn pointer wasobtained from an RCU-protected iteration over hdev->conn_hash.list andis not valid once these locks are dropped. A concurrent disconnect canfree the hci_conn between the unlock and the dereference, causing ause-after-free read.The cancellation mechanism in hci_conn_del() cannot prevent this becausehci_le_create_cis_pending() queues hci_create_cis_sync with data=NULL: hci_cmd_sync_queue(hdev, hci_create_cis_sync, NULL, NULL);While hci_conn_del() dequeues with data=conn: hci_cmd_sync_dequeue(hdev, NULL, conn, NULL);Since NULL != conn, the lookup in _hci_cmd_sync_lookup_entry() nevermatches, and the pending work item is not cancelled.Fix this by saving conn->conn_timeout into a local variable while thelocks are still held, so the stale conn pointer is never dereferencedafter unlock.This is the same class of bug as the one fixed by commit 035c25007c9e("Bluetooth: hci_sync: Fix UAF on le_read_features_complete") whichaddressed the identical pattern in a different function.This vulnerability was identified using 0sec.ai, an open-sourceautomated security auditing platform (<ahref="https://github.com/0sec-labs">https://github.com/0sec-labs).The Linux kernel CVE team has assigned CVE-2026-63944 to this issue.
已分析 2.openEulerScore 8.8
已分析 3.openEulerVector AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
已分析 4.受影响版本排查 master:不受影响,openEuler-20.03-LTS-SP4:不受影响,openEuler-22.03-LTS-SP4:不受影响,openEuler-24.03-LTS-Next:不受影响,openEuler-24.03-LTS-SP1:受影响,openEuler-24.03-LTS-SP3:受影响,openEuler-24.03-LTS-SP4:受影响,openEuler-22.03-LTS-SP3:受影响,openEuler-24.03-LTS:受影响,openEuler-24.03-LTS-SP2:受影响
已分析 5.是否涉及abi变化 master:否,openEuler-20.03-LTS-SP4:否,openEuler-22.03-LTS-SP4:否,openEuler-24.03-LTS-Next:否,openEuler-24.03-LTS-SP1:否,openEuler-24.03-LTS-SP3:否,openEuler-24.03-LTS-SP4:否,openEuler-22.03-LTS-SP3:否,openEuler-24.03-LTS:否,openEuler-24.03-LTS-SP2:否
已分析 6.原因说明 master:不受影响-漏洞代码不能被攻击者触发,openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在,openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在,openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发,openEuler-24.03-LTS-SP1:正常修复,openEuler-24.03-LTS-SP3:正常修复,openEuler-24.03-LTS-SP4:正常修复,openEuler-22.03-LTS-SP3:不修复-超出修复范围,openEuler-24.03-LTS:不修复-超出修复范围,openEuler-24.03-LTS-SP2:不修复-超出修复范围

请确认分析内容的准确性, 确认无误后, 您可以进行后续步骤, 否则您可以继续分析.

likedislike
openeuler-ci-bot
openeuler-ci-bot成员
11 天前 评论:

经过cve-manager解析,部分分支PR未合入,如红色字体所示:

原因说明:
1.master:不受影响-漏洞代码不能被攻击者触发
2.openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在
3.openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在
4.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
5.openEuler-24.03-LTS-SP1:正常修复(PR未合入)
6.openEuler-24.03-LTS-SP3:正常修复(PR未合入)
7.openEuler-24.03-LTS-SP4:正常修复(PR未合入)
8.openEuler-22.03-LTS-SP3:不修复-超出修复范围
9.openEuler-24.03-LTS:不修复-超出修复范围
10.openEuler-24.03-LTS-SP2:不修复-超出修复范围

likedislike
openeuler-ci-botopeneuler-ci-bot成员
6 小时前 修改了issue 的描述