CVE-2023-6111

Use-after-free in Linux kernel's netfilter: nf_tables component

At a glance

Severity: HIGH 7.8
EPSS: EPSS 0.32 % · percentile 24 (2026-10-27)
State: PUBLISHED
Published: 2023-11-14
Updated: 2025-02-13
Assigner: Google
NVD status: Analyzed

Description

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The function nft_trans_gc_catchall did not remove the catchall set element from the catchall_list when the argument sync is true, making it possible to free a catchall set element many times. We recommend upgrading past commit 93995bf4af2c5a99e2a87f0cd5ce547d31eb7630.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Google
CVSS 3.1	HIGH 7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	NVD · cve-coordination@google.com (Secondary)
CVSS 3.1	HIGH 7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-416

European references

ENISA EUVD · EUVD-2023-58366
GCVE · GCVE-0-2023-6111

CERT-FR advisories

CERTFR-2024-AVI-0034 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 5.15.134 < 5.15.140
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 6.1.56 < 6.1.64
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 6.5.6 < 6.5.13
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 6.6 < 6.6.3

Affected products

Product	Versions
Linux · Kernel	affected 6.6 < 6.7

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD