CVE-2023-6111

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

Published Nov 14, 2023 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-58366 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.
Ubuntu USN Ubuntu USN USN-6576-1 Linux kernel (OEM) vulnerability
History
Type Values Removed Values Added
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. 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.
Weaknesses

Sources

Status
PUBLISHED
Assigner
Google
Published
Updated
Feb 13, 2025, 5:26 PM
Reserved
Nov 13, 2023, 8:25 PM
Status
Analyzed
Published
Nov 14, 2023, 2:15 PM
Modified
Jun 17, 2026, 6:50 AM
Severity
Moderate
Public date
Nov 14, 2023, 12:00 AM