Out-of-Bounds Affecting kernel-libbpf-devel package, versions <0:6.1.52-71.125.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-AMZN2023-KERNELLIBBPFDEVEL-5912375
  • published21 Sept 2023
  • disclosed14 Aug 2023

Introduced: 14 Aug 2023

CVE-2023-21264  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel-libbpf-devel to version 0:6.1.52-71.125.amzn2023 or higher.
This issue was patched in ALAS2023-2023-349.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-libbpf-devel package and not the kernel-libbpf-devel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

In multiple functions of mem_protect.c, there is a possible way to access hypervisor memory due to a memory access check in the wrong place. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

CVSS Scores

version 3.1