CVE-2023-31248
High
CVE-2023-31248
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
Exploit probability
2.1%
Published
July 5, 2023
Required by
Not available
Last source change
April 16, 2026
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2023-31248
View original source
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
05 / REFERENCES
Further evidence
- http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html
- http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.html
- http://www.openwall.com/lists/oss-security/2023/07/05/2
- https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html
- https://lists.fedoraproject.org/archives/list/[email protected]/message/RGZC5XOANA75OJ4XARBBXYSLDKUIJI5E/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/UPHI46ROSSLVAV4R5LJWJYU747JGOS6D/
- https://lore.kernel.org/netfilter-devel/[email protected]/T/
- https://security.netapp.com/advisory/ntap-20240201-0001/
- https://www.debian.org/security/2023/dsa-5453
- https://www.openwall.com/lists/oss-security/2023/07/05/2