CVE-2023-4244

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Due to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability. We recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8.

• CWE-416
• CWE-416

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e91b0ebd994635df2346353322ac51ce84ce6d8Issue Tracking, Mailing List, Patch, Vendor Advisory
• https://kernel.dance/3e91b0ebd994635df2346353322ac51ce84ce6d8Patch, Vendor Advisory
• https://lists.debian.org/debian-lts-announce/2023/10/msg00027.htmlMailing List, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2024/01/msg00004.htmlMailing List, Third Party Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e91b0ebd994635df2346353322ac51ce84ce6d8Issue Tracking, Mailing List, Patch, Vendor Advisory
• https://kernel.dance/3e91b0ebd994635df2346353322ac51ce84ce6d8Patch, Vendor Advisory
• https://lists.debian.org/debian-lts-announce/2023/10/msg00027.htmlMailing List, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2024/01/msg00004.htmlMailing List, Third Party Advisory

Published

Sep 6, 2023

Last Modified

Jul 30, 2026

Status

Analyzed

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