CVE-2025-21863 Affecting python3-perf package, versions <0:5.14.0-611.5.1.el9_7


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.03% (10th percentile)

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  • Snyk IDSNYK-ALMALINUX9-PYTHON3PERF-14067448
  • published20 Nov 2025
  • disclosed11 Nov 2025

Introduced: 11 Nov 2025

NewCVE-2025-21863  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 python3-perf to version 0:5.14.0-611.5.1.el9_7 or higher.
This issue was patched in ALSA-2025:20518.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-perf package and not the python3-perf package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

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

io_uring: prevent opcode speculation

sqe->opcode is used for different tables, make sure we santitise it against speculations.

CVSS Base Scores

version 3.1