Description
In the Linux kernel, the following vulnerability has been resolved: block: fix potential invalid pointer dereference in blk_add_partition The blk_add_partition() function initially used a single if-condition (IS_ERR(part)) to check for errors when adding a partition. This was modified to handle the specific case of -ENXIO separately, allowing the function to proceed without logging the error in this case. However, this change unintentionally left a path where md_autodetect_dev() could be called without confirming that part is a valid pointer. This commit separates the error handling logic by splitting the initial if-condition, improving code readability and handling specific error scenarios explicitly. The function now distinguishes the general error case from -ENXIO without altering the existing behavior of md_autodetect_dev() calls.
Product status
b72053072c0bbe9f1cdfe2ffa3c201c185da2201 (git) before 4bc4272e2506941c3f3d4fb8b0c659ee814dcf6f
b72053072c0bbe9f1cdfe2ffa3c201c185da2201 (git) before cc4d21d9492db4e534d3e01253cf885c90dd2a8b
b72053072c0bbe9f1cdfe2ffa3c201c185da2201 (git) before 64cf2a39202ca2d9df5ee70eb310b6141ce2b8ed
b72053072c0bbe9f1cdfe2ffa3c201c185da2201 (git) before 80f5bfbb80ea1615290dbc24f49d3d8c86db58fe
b72053072c0bbe9f1cdfe2ffa3c201c185da2201 (git) before 652039ba477c9a4ab43740cf2cb0d068d53508c2
b72053072c0bbe9f1cdfe2ffa3c201c185da2201 (git) before afe53ea9b378c376101d99d216f13b6256f75189
b72053072c0bbe9f1cdfe2ffa3c201c185da2201 (git) before 26e197b7f9240a4ac301dd0ad520c0c697c2ea7d
5.5
Any version before 5.5
5.10.227 (semver)
5.15.168 (semver)
6.1.113 (semver)
6.6.54 (semver)
6.10.13 (semver)
6.11.2 (semver)
6.12 (original_commit_for_fix)
References
lists.debian.org/debian-lts-announce/2025/03/msg00002.html
lists.debian.org/debian-lts-announce/2025/01/msg00001.html
git.kernel.org/...c/4bc4272e2506941c3f3d4fb8b0c659ee814dcf6f
git.kernel.org/...c/cc4d21d9492db4e534d3e01253cf885c90dd2a8b
git.kernel.org/...c/64cf2a39202ca2d9df5ee70eb310b6141ce2b8ed
git.kernel.org/...c/80f5bfbb80ea1615290dbc24f49d3d8c86db58fe
git.kernel.org/...c/652039ba477c9a4ab43740cf2cb0d068d53508c2
git.kernel.org/...c/afe53ea9b378c376101d99d216f13b6256f75189
git.kernel.org/...c/26e197b7f9240a4ac301dd0ad520c0c697c2ea7d
