CVE-2023-1829

A use-after-free vulnerability in the Linux Kernel traffic control index filter (tcindex) can be exploited to achieve local privilege escalation. The tcindex_delete function which does not properly deactivate filters in case of a perfect hashes while deleting the underlying structure which can later lead to double freeing the structure. A local attacker user can use this vulnerability to elevate its privileges to root. We recommend upgrading past commit 8c710f75256bb3cf05ac7b1672c82b92c43f3d28 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ .

• linux linux kernel (< 4.14.308) • linux linux kernel (>= 4.15 < 4.19.276) • linux linux kernel (>= 4.20 < 5.4.235) • linux linux kernel (>= 5.5 < 5.10.173) • linux linux kernel (>= 5.11 < 5.15.100) • linux linux kernel (>= 5.16 < 6.1.18) • linux linux kernel (>= 6.2 < 6.2.5)