CVE-2023-6111

kernel: netfilter: use-after-free when removing catchall element in GC sync path

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Severity

Moderate

Red Hat Product Security

7.8

CVSS 3.1

Review impact separately from score.

Published · November 14, 2023

Updated · October 29, 2026

Description

A use-after-free flaw was found in the Linux kernel's netfilter functionality. This issue may allow a local user to crash the system or potentially escalate their privileges on the system.

Statement

Red Hat Enterprise Linux is not affected by this CVE, as the nf_tables GC transaction API and related upstream commits that introduced this flaw are not included in any shipping kernel release.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-416 · Use After Free