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medium5.5

CVE-2024-47705

In the Linux kernel, the following vulnerability has been resolved: block: fix potential invalid pointer dereference in blk_add_partition The blk_add_partition…

Impact

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.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
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

Weakness classification

CWE-476

References