<p>Upgrade <code>RHEL:8</code> <code>perf</code> to version 0:4.18.0-348.el8 or higher.<br>This issue was patched in <code>RHSA-2021:4356</code>.</p>

Improper Locking Affecting perf package, versions <0:4.18.0-348.el8

Threat Intelligence

0.05% (16^th percentile)

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Snyk ID SNYK-RHEL8-PERF-1356986
published 26 Jul 2021
disclosed 15 Mar 2021

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Introduced: 15 Mar 2021

CVE-2021-29650 Open this link in a new tab CWE-667 Open this link in a new tab CWE-662 Open this link in a new tab

How to fix?

Upgrade RHEL:8 perf to version 0:4.18.0-348.el8 or higher.
This issue was patched in RHSA-2021:4356.

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: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.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Local
Attack Complexity (AC)

Low
Privileges Required (PR)

Low
User Interaction (UI)

None

Scope (S)

Unchanged

Confidentiality (C)

None
Integrity (I)

None
Availability (A)

High

Improper Locking Affecting perf package, versions <0:4.18.0-348.el8

Severity

Based on Red Hat Enterprise Linux security rating