CVE-2026-80521

In the Linux kernel, the following vulnerability has been resolved: afunix: Unlink sccentry in unixdeledge. Kyle Zeng reported that GC could free a dead SCC partially. The scenario is as follows: 1 Create two SCCs: X -. A B ^--' 2 Run the following concurrently: 2-1 send sk-B to sk-B from sk-X 2-...

CVE-2026-80520 ovpn: fix NULL dereference when killing missing key

In the Linux kernel, the following vulnerability has been resolved: ovpn: fix NULL dereference when killing missing key ovpncryptokillkey assumes both crypto slots are populated and dereferences each slot before checking it. That is not guaranteed: a peer can have only one installed key, and the...

CVE-2026-80519

In the Linux kernel, the following vulnerability has been resolved: ovpn: finish crypto callback cleanup before peer release Crypto completion callbacks hold both key-slot and peer references. The peer reference pins the netdev, and dropping the last peer reference can let netdev unregistration a...

CVE-2026-80520 ovpn: fix NULL dereference when killing missing key

In the Linux kernel, the following vulnerability has been resolved: ovpn: fix NULL dereference when killing missing key ovpncryptokillkey assumes both crypto slots are populated and dereferences each slot before checking it. That is not guaranteed: a peer can have only one installed key, and the...

CVE-2026-80520

A NULL pointer dereference in the Linux kernel's ovpn (OpenVPN) module can lead to a denial of service (CVSS 3.1: 7.5, HIGH). The function ovpn_crypto_kill_key assumes both crypto slots are populated and dereferences each before checking for NULL. Since a peer can have only one installed key, the...

CVE-2026-80519 ovpn: finish crypto callback cleanup before peer release

In the Linux kernel, the following vulnerability has been resolved: ovpn: finish crypto callback cleanup before peer release Crypto completion callbacks hold both key-slot and peer references. The peer reference pins the netdev, and dropping the last peer reference can let netdev unregistration a...

CVE-2026-80520

In the Linux kernel, the following vulnerability has been resolved: ovpn: fix NULL dereference when killing missing key ovpncryptokillkey assumes both crypto slots are populated and dereferences each slot before checking it. That is not guaranteed: a peer can have only one installed key, and the...

CVE-2026-80519 ovpn: finish crypto callback cleanup before peer release

In the Linux kernel, the following vulnerability has been resolved: ovpn: finish crypto callback cleanup before peer release Crypto completion callbacks hold both key-slot and peer references. The peer reference pins the netdev, and dropping the last peer reference can let netdev unregistration a...

CVE-2026-74754 scsi: core: pair EH runtime PM get and put

In the Linux kernel, the following vulnerability has been resolved: scsi: core: pair EH runtime PM get and put shost-ehnoresume is currently consulted twice in one error handling iteration: once before scsiautopmgethost and once again before scsiautopmputhost. That is racy when a PM-triggered err...

CVE-2026-74753

In the Linux kernel, the following vulnerability has been resolved: perf: Reject exited events as group leaders perfeventremoveonexec sets remove-on-exec events to the EXIT state and detaches their group relationships. The event's file descriptor can remain open, however, and perfeventopen...

CVE-2026-74754

In the Linux kernel, the following vulnerability has been resolved: scsi: core: pair EH runtime PM get and put shost-ehnoresume is currently consulted twice in one error handling iteration: once before scsiautopmgethost and once again before scsiautopmputhost. That is racy when a PM-triggered err...

CVE-2026-74754

CVE-2026-74754 is a race condition in the Linux kernel SCSI core. The shost->eh_noresume flag is consulted twice per error-handling (EH) iteration—once before scsi_autopm_get_host() and once before scsi_autopm_put_host(). If a power-management path (e.g., ufshcd_set_dev_pwr_mode()) flips this ...

CVE-2026-74753

This use-after-free vulnerability in the Linux kernel's perf subsystem occurs because perf_event_open() accepts events in the EXIT state as group leaders, rejecting only REVOKED and DEAD events. After perf_event_remove_on_exec() detaches group relationships, a new sibling can be linked to the det...

CVE-2026-74753 perf: Reject exited events as group leaders

In the Linux kernel, the following vulnerability has been resolved: perf: Reject exited events as group leaders perfeventremoveonexec sets remove-on-exec events to the EXIT state and detaches their group relationships. The event's file descriptor can remain open, however, and perfeventopen...

CVE-2026-74753 perf: Reject exited events as group leaders

In the Linux kernel, the following vulnerability has been resolved: perf: Reject exited events as group leaders perfeventremoveonexec sets remove-on-exec events to the EXIT state and detaches their group relationships. The event's file descriptor can remain open, however, and perfeventopen...

CVE-2026-74752 sctp: validate cookie AUTH state before use

In the Linux kernel, the following vulnerability has been resolved: sctp: validate cookie AUTH state before use When cookie authentication is disabled, COOKIEECHO restores fixed-size AUTH fields directly from peer-controlled cookie bytes. A forged RANDOM length, HMAC list, or CHUNKS list can then...

CVE-2026-74752

CVE-2026-74752 is a critical (CVSS 9.8) vulnerability in the Linux kernel's SCTP implementation. When cookie authentication is disabled, the COOKIE_ECHO handler restores fixed-size AUTH fields directly from peer-controlled cookie bytes without validating them against local backing arrays. A forge...

CVE-2026-74752 sctp: validate cookie AUTH state before use

In the Linux kernel, the following vulnerability has been resolved: sctp: validate cookie AUTH state before use When cookie authentication is disabled, COOKIEECHO restores fixed-size AUTH fields directly from peer-controlled cookie bytes. A forged RANDOM length, HMAC list, or CHUNKS list can then...

CVE-2026-74752

In the Linux kernel, the following vulnerability has been resolved: sctp: validate cookie AUTH state before use When cookie authentication is disabled, COOKIEECHO restores fixed-size AUTH fields directly from peer-controlled cookie bytes. A forged RANDOM length, HMAC list, or CHUNKS list can then...

CVE-2026-74750

CVE-2026-74750 affects the Linux kernel's ovpn (OpenVPN) module . The root cause is that key slots are released via an RCU callback, which calls crypto_free_aead —a function that may sleep when an asynchronous or hardware crypto implementation has pending teardown work. Calling a sleeping functio...