Loop with Unreachable Exit Condition ('Infinite Loop') Affecting perf package, versions <0:2.6.32-220.2.1.el6


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-RHEL6-PERF-1436140
  • published26 Jul 2021
  • disclosed21 Nov 2010

Introduced: 21 Nov 2010

CVE-2011-4621  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade RHEL:6 perf to version 0:2.6.32-220.2.1.el6 or higher.
This issue was patched in RHSA-2011:1849.

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:6 relevant fixed versions and status.

The Linux kernel before 2.6.37 does not properly implement a certain clock-update optimization, which allows local users to cause a denial of service (system hang) via an application that executes code in a loop.

CVSS Scores

version 3.1