Use After Free Affecting kernel-rt-trace package, versions <0:3.10.0-693.5.2.rt56.626.el7


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-RHEL7-KERNELRTTRACE-4755814
  • 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)
First added by Snyk

How to fix?

Upgrade RHEL:7 kernel-rt-trace to version 0:3.10.0-693.5.2.rt56.626.el7 or higher.
This issue was patched in RHSA-2017:2931.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-trace package and not the kernel-rt-trace package as distributed by RHEL. See How to fix? for RHEL:7 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