Use After Free Affecting kernel-debuginfo-common-x86_64 package, versions <0:4.18.0-305.3.1.el8_4


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-ROCKY8-KERNELDEBUGINFOCOMMONX8664-3291227
  • published3 Feb 2023
  • disclosed1 Jun 2021

Introduced: 1 Jun 2021

CVE-2021-3543  (opens in a new tab)
CWE-416  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 kernel-debuginfo-common-x86_64 to version 0:4.18.0-305.3.1.el8_4 or higher.
This issue was patched in RLSA-2021:2168.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo-common-x86_64 package and not the kernel-debuginfo-common-x86_64 package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to crash the system or escalate their privileges on the system.

CVSS Scores

version 3.1