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.
CVSS
5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
from b72053072c0bbe9f1cdfe2ffa3c201c185da2201 before 4bc4272e2506941c3f3d4fb8b0c659ee814dcf6f; from b72053072c0bbe9f1cdfe2ffa3c201c185da2201 before cc4d21d9492db4e534d3e01253cf885c90dd2a8b; from b72053072c0bbe9f1cdfe2ffa3c201c185da2201 before 64cf2a39202ca2d9df5ee70eb310b6141ce2b8ed; from b72053072c0bbe9f1cdfe2ffa3c201c185da2201 before 80f5bfbb80ea1615290dbc24f49d3d8c86db58fe; from b72053072c0bbe9f1cdfe2ffa3c201c185da2201 before 652039ba477c9a4ab43740cf2cb0d068d53508c2; from b72053072c0bbe9f1cdfe2ffa3c201c185da2201 before afe53ea9b378c376101d99d216f13b6256f75189; from b72053072c0bbe9f1cdfe2ffa3c201c185da2201 before 26e197b7f9240a4ac301dd0ad520c0c697c2ea7d
from 5.5 before 5.10.227; from 5.11 before 5.15.168; from 5.16 before 6.1.113; from 6.2 before 6.6.54; from 6.7 before 6.10.13; from 6.11 before 6.11.2
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.
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