Use After Free Affecting perf package, versions <0:2.6.32-696.20.1.el6


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
0.08% (36th percentile)

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  • Snyk IDSNYK-RHEL6-PERF-1516769
  • published26 Jul 2021
  • disclosed9 Jul 2017

Introduced: 9 Jul 2017

CVE-2017-11176  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:6 perf to version 0:2.6.32-696.20.1.el6 or higher.
This issue was patched in RHSA-2018:0169.

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 mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry into the retry logic. During a user-space close of a Netlink socket, it allows attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact.

CVSS Scores

version 3.1