Use After Free Affecting bpftool package, versions <0:4.18.0-513.5.1.el8_9


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-ALMALINUX8-BPFTOOL-6088479
  • published27 Nov 2023
  • disclosed9 May 2023

Introduced: 9 May 2023

CVE-2023-0590  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 bpftool to version 0:4.18.0-513.5.1.el8_9 or higher.
This issue was patched in ALSA-2023:7077.

NVD Description

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

A use-after-free flaw was found in qdisc_graft in net/sched/sch_api.c in the Linux Kernel due to a race problem. This flaw leads to a denial of service issue. If patch ebda44da44f6 ("net: sched: fix race condition in qdisc_graft()") not applied yet, then kernel could be affected.

CVSS Scores

version 3.1