PT-2026-40031

pam authnft 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 peer lookup tcp src/peer lookup.c:134, prior to the fix allowed a crafted NETLINK SOCK DIAG reply to slip past the message-size check...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-011203)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011203 advisory. In the Linux kernel, the following vulnerability has been resolved: netlink: fix potential deadlock in netlinkseterr syzbot reported a possible deadlock in...

UBUNTU-CVE-2023-53731

In the Linux kernel, the following vulnerability has been resolved: netlink: fix potential deadlock in netlinkseterr syzbot reported a possible deadlock in netlinkseterr 1 A similar issue was fixed in commit 1d482e666b8e "netlink: disable IRQs for netlinklocktable" in netlinklocktable This patch...

CVE-2023-53731

CVE-2023-53731 describes a potential deadlock in the Linux kernel netlink subsystem (netlink_set_err). SYZBOT reported a deadlock scenario involving nl_table_lock and a softirq-safe lock (local->queue_stop_reason_lock) that could invert IRQ lock ordering. Connected advisories confirm a fix add...

CVE-2023-53731 netlink: fix potential deadlock in netlink_set_err()

In the Linux kernel, the following vulnerability has been resolved: netlink: fix potential deadlock in netlinkseterr syzbot reported a possible deadlock in netlinkseterr 1 A similar issue was fixed in commit 1d482e666b8e "netlink: disable IRQs for netlinklocktable" in netlinklocktable This patch...