CVE-2023-6111

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

HIGH
7.8
CVSS Score
Published: November 14, 2023 at 02:05 PM UTC
Updated: June 17, 2026 at 06:50 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.15.134 ≤ v < 5.15.1406.1.56 ≤ v < 6.1.646.5.6 ≤ v < 6.5.136.6 ≤ v < 6.6.36.6 ≤ v < 6.76.6
Affected range stops below 5.15.140, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.64, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.5.13, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.6.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.7, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

7.8HIGHGoogle
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-416

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