CVE-2023-6817

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

https://www.cisa.gov/news-events/ics-advisories/icsa-24-102-01

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

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

https://kernel.dance/317eb9685095678f2c9f5a8189de698c5354316a

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

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

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

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

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3