CVE-2026-43916 pam_authnft: Heap buffer overflow in NETLINK_SOCK_DIAG reply walker

pamauthnft is a PAM session module binding nftables firewall rules to authenticated sessions via cgroupv2 inodes. Prior to 0.2.0-alpha, a heap buffer over-read in peerlookuptcp src/peerlookup.c:134, prior to the fix allowed a crafted NETLINKSOCKDIAG reply to slip past the message-size check, then...

PT-2026-40031

Name of the Vulnerable Software and Affected Versions pam authnft versions prior to 0.2.0-alpha Description pam authnft is a PAM session module that binds nftables firewall rules to authenticated sessions using cgroupv2 inodes. A heap buffer over-read exists in the peer lookup tcp function. This...