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CWE

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CVE-2023-6817

Published: Dec 18, 2023

Modified: May 12, 2026

PUBLISHED

CVSS v3.1

7.8

HIGH

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_pipapo_walk did not skip inactive elements during set walk which could lead double deactivations of PIPAPO (Pile Packet Policies) elements, leading to use-after-free. We recommend upgrading past commit 317eb9685095678f2c9f5a8189de698c5354316a.

Vendor	Product	Versions
Linux	Kernel	affected `5.6 - < 6.7`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=317eb9685095678f2c9f5a8189de698c5354316a

patch

https://kernel.dance/317eb9685095678f2c9f5a8189de698c5354316a

http://www.openwall.com/lists/oss-security/2023/12/22/6

http://www.openwall.com/lists/oss-security/2023/12/22/13

https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html

http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html

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