From a920cc9b3a8fc8b9ee57fa5c4a30d9234eb7a819 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Thu, 1 Aug 2024 12:03:54 +0900
Subject: [PATCH 0829/1160] import: check overflow
Fixes CID#1548022 and CID#1548075.
(cherry picked from commit f7012a93a7f04fa29c7933a4963aa17fcf120e97)
(cherry picked from commit 11c15905cd4759b89a1da63d05772c1f7c3744a4)
src/import/import-raw.c | 5 +++++
src/import/import-tar.c | 5 +++++
2 files changed, 10 insertions(+)
@@ -408,6 +408,11 @@ static int raw_import_process(RawImport *i) {
goto finish;
}
+ if ((size_t) l > sizeof(i->buffer) - i->buffer_size) {
+ r = log_error_errno(SYNTHETIC_ERRNO(EBADMSG), "Read input file exceeded maximum size.");
+ goto finish;
+ }
+
i->buffer_size += l;
if (i->compress.type == IMPORT_COMPRESS_UNKNOWN) {
@@ -275,6 +275,11 @@ static int tar_import_process(TarImport *i) {
goto finish;
}
+ if ((size_t) l > sizeof(i->buffer) - i->buffer_size) {
+ r = log_error_errno(SYNTHETIC_ERRNO(EBADMSG), "Read input file exceeded maximum size.");
+ goto finish;
+ }
+
i->buffer_size += l;
if (i->compress.type == IMPORT_COMPRESS_UNKNOWN) {
--
2.33.0