CVE-2023-6817

HIGH

Linux Kernel 5.6-5.10.204 and 6.0-6.7 - Use-After-Free in nf_tables PIPAPO Set Walk

Title source: llm

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.

References (8)

Core 8

Core References

Mailing List, Patch patch

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

Patch

https://kernel.dance/317eb9685095678f2c9f5a8189de698c5354316a

Mailing List

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

Mailing List

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

Mailing List

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

Exploit, Third Party Advisory

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

Vendor Advisory

https://cert-portal.siemens.com/productcert/html/ssa-265688.html

Vendor Advisory

https://cert-portal.siemens.com/productcert/html/ssa-398330.html

Scores

CVSS v3 7.8

EPSS 0.0033

EPSS Percentile 25.2%

Attack Vector LOCAL

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

Details

CWE

CWE-416

Status published

Products (3)

Linux/Kernel 5.6 - 6.7

linux/linux_kernel 6.7 rc1 (4 CPE variants)

linux/linux_kernel 5.6 - 5.10.204

Published Dec 18, 2023

Tracked Since Feb 18, 2026