Use After Free Affecting bpftool package, versions <0:4.18.0-372.19.1.el8_6


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.19% (57th percentile)

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  • Snyk IDSNYK-RHEL8-BPFTOOL-4299426
  • published6 Jul 2022
  • disclosed31 May 2022

Introduced: 31 May 2022

CVE-2022-32250  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:8 bpftool to version 0:4.18.0-372.19.1.el8_6 or higher.
This issue was patched in RHSA-2022:5819.

NVD Description

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

net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.

References

CVSS Scores

version 3.1