Out-of-bounds Write Affecting kernel-core package, versions <0:4.18.0-305.12.1.el8_4


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
0.21% (60th percentile)

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  • Snyk IDSNYK-ROCKY8-KERNELCORE-3289829
  • published3 Feb 2023
  • disclosed7 Jul 2021

Introduced: 7 Jul 2021

CVE-2021-22555  (opens in a new tab)
CWE-787  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade Rocky-Linux:8 kernel-core to version 0:4.18.0-305.12.1.el8_4 or higher.
This issue was patched in RLSA-2021:3057.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-core package and not the kernel-core package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space

CVSS Scores

version 3.1