Improper Locking Affecting kernel-rt-debug-modules-extra package, versions <0:4.18.0-348.rt7.130.el8


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELRTDEBUGMODULESEXTRA-4161182
  • published26 Jul 2021
  • disclosed15 Mar 2021

Introduced: 15 Mar 2021

CVE-2021-29650  (opens in a new tab)
CWE-667  (opens in a new tab)
CWE-662  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-rt-debug-modules-extra to version 0:4.18.0-348.rt7.130.el8 or higher.
This issue was patched in RHSA-2021:4140.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-modules-extra package and not the kernel-rt-debug-modules-extra package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

An issue was discovered in the Linux kernel before 5.11.11. The netfilter subsystem allows attackers to cause a denial of service (panic) because net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h lack a full memory barrier upon the assignment of a new table value, aka CID-175e476b8cdf.

CVSS Scores

version 3.1