CVE-2023-5197

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

MEDIUM
6.6
CVSS Score
Published: September 26, 2023 at 10:04 AM UTC
Updated: October 14, 2026 at 10:17 PM UTC
2 products affected across 2 vendorsLinux KernelDebian Linux

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Severity
MEDIUM6.6
Exploit prediction
EPSS 0.4%

Description

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Addition and removal of rules from chain bindings within the same transaction causes leads to use-after-free. We recommend upgrading past commit f15f29fd4779be8a418b66e9d52979bb6d6c2325.

Affected

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

5.11 ≤ v < 5.15.1345.16 ≤ v < 6.1.565.9.0 ≤ v < 5.10.1986.2 ≤ v < 6.5.65.9
Affected range stops below 6.6, 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

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

Quick Info

StatusMODIFIED
CWE
CWE-416

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