Use After Free Affecting python-perf package, versions <0:2.6.32-754.53.1.el6


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-ORACLE6-PYTHONPERF-6672509
  • published24 Apr 2024
  • disclosed12 Sept 2023

Introduced: 12 Sep 2023

CVE-2023-4921  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:6 python-perf to version 0:2.6.32-754.53.1.el6 or higher.
This issue was patched in ELSA-2024-1831.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-perf package and not the python-perf package as distributed by Oracle. See How to fix? for Oracle:6 relevant fixed versions and status.

A use-after-free vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation.

When the plug qdisc is used as a class of the qfq qdisc, sending network packets triggers use-after-free in qfq_dequeue() due to the incorrect .peek handler of sch_plug and lack of error checking in agg_dequeue().

We recommend upgrading past commit 8fc134fee27f2263988ae38920bc03da416b03d8.

CVSS Scores

version 3.1