NULL Pointer Dereference Affecting kernel-livepatch-4.14.304-226.531 package, versions <0:1.0-0.amzn2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
1.01% (63rd percentile)

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  • Snyk IDSNYK-AMZN2-KERNELLIVEPATCH414304226531-3314912
  • published8 Feb 2023
  • disclosed17 Jan 2023

Introduced: 17 Jan 2023

CVE-2022-47929  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 kernel-livepatch-4.14.304-226.531 to version 0:1.0-0.amzn2 or higher.
This issue was patched in ALAS2-2023-1932.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-4.14.304-226.531 package and not the kernel-livepatch-4.14.304-226.531 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

In the Linux kernel before 6.1.6, a NULL pointer dereference bug in the traffic control subsystem allows an unprivileged user to trigger a denial of service (system crash) via a crafted traffic control configuration that is set up with "tc qdisc" and "tc class" commands. This affects qdisc_graft in net/sched/sch_api.c.

CVSS Base Scores

version 3.1