Use After Free Affecting kernel-modules-extra-matched package, versions <0:6.12.0-124.8.1.el10_1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.22% (13th percentile)

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  • Snyk IDSNYK-RHEL10-KERNELMODULESEXTRAMATCHED-13884593
  • published12 Nov 2025
  • disclosed27 Dec 2024

Introduced: 27 Dec 2024

CVE-2024-56675  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:10 kernel-modules-extra-matched to version 0:6.12.0-124.8.1.el10_1 or higher.
This issue was patched in RHSA-2025:20095.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-modules-extra-matched package and not the kernel-modules-extra-matched package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

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

bpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors

Uprobes always use bpf_prog_run_array_uprobe() under tasks-trace-RCU protection. But it is possible to attach a non-sleepable BPF program to a uprobe, and non-sleepable BPF programs are freed via normal RCU (see __bpf_prog_put_noref()). This leads to UAF of the bpf_prog because a normal RCU grace period does not imply a tasks-trace-RCU grace period.

Fix it by explicitly waiting for a tasks-trace-RCU grace period after removing the attachment of a bpf_prog to a perf_event.

CVSS Base Scores

version 3.1