CVE-2024-26993 Affecting kernel-abi-stablelists package, versions <0:5.14.0-70.112.1.el9_0


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-RHEL9-KERNELABISTABLELISTS-7682028
  • published14 Aug 2024
  • disclosed1 May 2024

Introduced: 1 May 2024

CVE-2024-26993  (opens in a new tab)

How to fix?

Upgrade RHEL:9 kernel-abi-stablelists to version 0:5.14.0-70.112.1.el9_0 or higher.
This issue was patched in RHSA-2024:5257.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-abi-stablelists package and not the kernel-abi-stablelists package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

fs: sysfs: Fix reference leak in sysfs_break_active_protection()

The sysfs_break_active_protection() routine has an obvious reference leak in its error path. If the call to kernfs_find_and_get() fails then kn will be NULL, so the companion sysfs_unbreak_active_protection() routine won't get called (and would only cause an access violation by trying to dereference kn->parent if it was called). As a result, the reference to kobj acquired at the start of the function will never be released.

Fix the leak by adding an explicit kobject_put() call when kn is NULL.

CVSS Scores

version 3.1