Use of Uninitialized Resource Affecting python3-perf package, versions <0:4.18.0-372.9.1.el8


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-RHEL8-PYTHON3PERF-4275254
  • published26 Jul 2021
  • disclosed25 Jun 2021

Introduced: 25 Jun 2021

CVE-2021-21781  (opens in a new tab)
CWE-908  (opens in a new tab)

How to fix?

Upgrade RHEL:8 python3-perf to version 0:4.18.0-372.9.1.el8 or higher.
This issue was patched in RHSA-2022:1988.

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 RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

An information disclosure vulnerability exists in the ARM SIGPAGE functionality of Linux Kernel v5.4.66 and v5.4.54. The latest version (5.11-rc4) seems to still be vulnerable. A userland application can read the contents of the sigpage, which can leak kernel memory contents. An attacker can read a process’s memory at a specific offset to trigger this vulnerability. This was fixed in kernel releases: 4.14.222 4.19.177 5.4.99 5.10.17 5.11

CVSS Scores

version 3.1