CVE-2023-4244

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to the commit 3e91b0ebd994635df2346353322ac51ce84ce6d8

Description 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.

Recommendations Upgrade past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8 to resolve the issue. As a temporary workaround, consider restricting access to the nf tables component to minimize the risk of exploitation.