Expired Pointer Dereference Affecting bpftool package, versions <0:4.18.0-477.10.1.el8_8


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.16% (6th percentile)

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  • Snyk IDSNYK-RHEL8-BPFTOOL-13345831
  • published7 Oct 2025
  • disclosed4 Oct 2025

Introduced: 4 Oct 2025

CVE-2022-50496  (opens in a new tab)
CWE-825  (opens in a new tab)

How to fix?

Upgrade RHEL:8 bpftool to version 0:4.18.0-477.10.1.el8_8 or higher.
This issue was patched in RHSA-2023:2951.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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

dm cache: Fix UAF in destroy()

Dm_cache also has the same UAF problem when dm_resume() and dm_destroy() are concurrent.

Therefore, cancelling timer again in destroy().

CVSS Base Scores

version 3.1