CVE-2026-80519

A flaw was found in the Linux kernel. Specifically, within the OpenVPN OVPN module's crypto completion callback mechanism, a timing issue exists. This vulnerability arises when peer references are released prematurely, before the associated cleanup operations are complete. An attacker could...

CVE-2026-80520

A flaw was found in the ovpn module of the Linux kernel. The ovpncryptokillkey function incorrectly assumes that both crypto key slots are always populated. This can lead to a NULL dereference if a peer has only one installed key or if the function attempts to remove a key that is not present. A...

CVE-2026-74750

A flaw was found in the Linux kernel's ovpn module. This vulnerability arises from an incorrect handling of cryptographic resource freeing, where a function that requires the ability to pause sleep is executed in a context that does not allow it. This improper resource management could lead to...

EUVD-2026-66580

In the Linux kernel, the following vulnerability has been resolved: ovpn: defer key slot crypto freeing to workqueue Key slots are released through a kref and the existing release path frees the AEAD transforms from an RCU callback. That is not safe for all crypto implementations: cryptofreeaead...

EUVD-2026-66585

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...

EUVD-2026-66586

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

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 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-2026-80520 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 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-2026-80519 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-2026-80519

CVE-2026-80519 affects the Linux kernel OpenVPN module (ovpn) due to an incorrect ordering of reference cleanup in crypto completion callbacks. Specifically, the peer reference (which pins the netdev) is dropped before the callback finishes its own cleanup, allowing ovpn_crypto_key_slot_put to sc...

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...

CVE-2026-74750 ovpn: defer key slot crypto freeing to workqueue

In the Linux kernel, the following vulnerability has been resolved: ovpn: defer key slot crypto freeing to workqueue Key slots are released through a kref and the existing release path frees the AEAD transforms from an RCU callback. That is not safe for all crypto implementations: cryptofreeaead...

CVE-2026-74750 ovpn: defer key slot crypto freeing to workqueue

In the Linux kernel, the following vulnerability has been resolved: ovpn: defer key slot crypto freeing to workqueue Key slots are released through a kref and the existing release path frees the AEAD transforms from an RCU callback. That is not safe for all crypto implementations: cryptofreeaead...

PT-2026-82135

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ovpn component where crypto completion callbacks do not properly manage references to the key-slot and peer. Specifically, the peer reference pins the netdev, and...

Linux Distros Unpatched Vulnerability : CVE-2026-74750

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ovpn: defer key slot crypto freeing to workqueue Key slots are released through a kref and the existing release path frees the AEAD transforms from an RCU...

Linux Distros Unpatched Vulnerability : CVE-2026-80519

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ovpn: finish crypto callback cleanup before peer release Crypto completion callbacks hold both key-slot and peer references. The peer reference pins the netdev,...

Linux Distros Unpatched Vulnerability : CVE-2026-80520

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ovpn: fix NULL dereference when killing missing key ovpncryptokillkey assumes both crypto slots are populated and dereferences each slot before checking it. Tha...