Use After Free Affecting perf package, versions <0:3.10.0-514.90.2.el7


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
1.38% (69th percentile)

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  • Snyk IDSNYK-RHEL7-PERF-5212525
  • published26 Jul 2021
  • disclosed28 Jan 2021

Introduced: 28 Jan 2021

CVE-2021-3347  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:7 perf to version 0:3.10.0-514.90.2.el7 or higher.
This issue was patched in RHSA-2021:2733.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458.

References

CVSS Base Scores

version 3.1