Buffer Overflow Affecting kernel-64k-debug-modules-core package, versions *


Severity

Recommended
low

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-RHEL9-KERNEL64KDEBUGMODULESCORE-5760024
  • published16 Feb 2022
  • disclosed11 Feb 2022

Introduced: 11 Feb 2022

CVE-2021-45402  (opens in a new tab)
CWE-120  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:9 kernel-64k-debug-modules-core.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-64k-debug-modules-core package and not the kernel-64k-debug-modules-core package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

The check_alu_op() function in kernel/bpf/verifier.c in the Linux kernel through v5.16-rc5 did not properly update bounds while handling the mov32 instruction, which allows local users to obtain potentially sensitive address information, aka a "pointer leak."

CVSS Scores

version 3.1