Use After Free Affecting python-perf package, versions <0:3.10.0-1160.42.2.el7


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-CENTOS7-PYTHONPERF-2185515
  • published7 Sept 2021
  • disclosed7 Sept 2021

Introduced: 7 Sep 2021

CVE-2021-3715  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Centos:7 python-perf to version 0:3.10.0-1160.42.2.el7 or higher.

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 Centos. See How to fix? for Centos:7 relevant fixed versions and status.

A flaw was found in the "Routing decision" classifier in the Linux kernel's Traffic Control networking subsystem in the way it handled changing of classification filters, leading to a use-after-free condition. This flaw allows unprivileged local users to escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

CVSS Scores

version 3.1