CVE-2023-31248 | BDVDB-2026-206246 Detail
LinuxLinux Kernel
Description#
Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; `nft_chain_lookup_byid()` failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network namespace
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.
Weaknesses#
- CWE-416 Use After Free
References#
- https://lore.kernel.org/netfilter-devel/20230705121627.GC19489@breakpoint.cc/T/
- https://www.openwall.com/lists/oss-security/2023/07/05/2
- http://www.openwall.com/lists/oss-security/2023/07/05/2
- https://www.debian.org/security/2023/dsa-5453
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPHI46ROSSLVAV4R5LJWJYU747JGOS6D/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGZC5XOANA75OJ4XARBBXYSLDKUIJI5E/
- http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html
- https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html
- http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.html
- https://security.netapp.com/advisory/ntap-20240201-0001/
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.