UBUNTU-CVE-2026-80692

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: hold conn in hciconnectacl/lesync callbacks There is theoretical UAF if the conn is freed while the hcisync task is running. Hold refcount to avoid that...

UBUNTU-CVE-2026-80721

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: ensure no dangling hcon references in isoconn After isoconndel, ISO sockets should not dereference the hcon any more. Currently, clearing isoconn::hcon relies on isoconndel releasing the last reference to the...

UBUNTU-CVE-2026-80666

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: sco: Fix a race condition in scosocktimeout scosocktimeout runs asynchronously and locksocksk. If the socket is closing while the timer is running, it holds the same lock locksocksk twice, leading to a deadlock. CPU 0...

CVE-2026-80666

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: sco: Fix a race condition in scosocktimeout scosocktimeout runs asynchronously and locksocksk. If the socket is closing while the timer is running, it holds the same lock locksocksk twice, leading to a deadlock. CPU 0...

CVE-2026-80721

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: ensure no dangling hcon references in isoconn After isoconndel, ISO sockets should not dereference the hcon any more. Currently, clearing isoconn::hcon relies on isoconndel releasing the last reference to the...

CVE-2026-80692

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: hold conn in hciconnectacl/lesync callbacks There is theoretical UAF if the conn is freed while the hcisync task is running. Hold refcount to avoid that...

CVE-2026-80683

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: give the socket its own scoconn reference scoconndel drops a reference it does not own. It takes one transient reference via scoconnholdunlesszero and releases it with the scoconnput that follows scosockhold; the...

CVE-2026-80721 Bluetooth: ISO: ensure no dangling hcon references in iso_conn

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: ensure no dangling hcon references in isoconn After isoconndel, ISO sockets should not dereference the hcon any more. Currently, clearing isoconn::hcon relies on isoconndel releasing the last reference to the...

CVE-2026-80721

A dangling pointer vulnerability exists in the Linux kernel Bluetooth ISO (Isochronous) subsystem. After iso_conn_del() is called, ISO sockets may still dereference the hcon (HCI connection) pointer because clearing iso_conn::hcon previously relied on iso_conn_del() releasing the last reference t...

EUVD-2026-67456

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: ensure no dangling hcon references in isoconn After isoconndel, ISO sockets should not dereference the hcon any more. Currently, clearing isoconn::hcon relies on isoconndel releasing the last reference to the...

CVE-2026-80721 Bluetooth: ISO: ensure no dangling hcon references in iso_conn

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: ensure no dangling hcon references in isoconn After isoconndel, ISO sockets should not dereference the hcon any more. Currently, clearing isoconn::hcon relies on isoconndel releasing the last reference to the...

CVE-2026-80721

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: ensure no dangling hcon references in isoconn After isoconndel, ISO sockets should not dereference the hcon any more. Currently, clearing isoconn::hcon relies on isoconndel releasing the last reference to the...

CVE-2026-80692

CVE-2026-80692 is a theoretical Use-After-Free (UAF) in the Linux kernel's Bluetooth HCI subsystem , specifically in the hci_connect_acl() and hci_connect_le_sync() callbacks. If the conn object is freed while the hci_sync task is running, a UAF can occur. The fix holds a refcount to the conn obj...

CVE-2026-80692 Bluetooth: hci_sync: hold conn in hci_connect_acl/le_sync() callbacks

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: hold conn in hciconnectacl/lesync callbacks There is theoretical UAF if the conn is freed while the hcisync task is running. Hold refcount to avoid that...

EUVD-2026-67427

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: hold conn in hciconnectacl/lesync callbacks There is theoretical UAF if the conn is freed while the hcisync task is running. Hold refcount to avoid that...

CVE-2026-80692 Bluetooth: hci_sync: hold conn in hci_connect_acl/le_sync() callbacks

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: hold conn in hciconnectacl/lesync callbacks There is theoretical UAF if the conn is freed while the hcisync task is running. Hold refcount to avoid that...

CVE-2026-80692

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: hold conn in hciconnectacl/lesync callbacks There is theoretical UAF if the conn is freed while the hcisync task is running. Hold refcount to avoid that...

CVE-2026-80683 Bluetooth: SCO: give the socket its own sco_conn reference

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: give the socket its own scoconn reference scoconndel drops a reference it does not own. It takes one transient reference via scoconnholdunlesszero and releases it with the scoconnput that follows scosockhold; the...

EUVD-2026-67559

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: give the socket its own scoconn reference scoconndel drops a reference it does not own. It takes one transient reference via scoconnholdunlesszero and releases it with the scoconnput that follows scosockhold; the...

CVE-2026-80683

CVE-2026-80683 is a use-after-free vulnerability in the Linux kernel's Bluetooth SCO subsystem . The root cause is a reference-counting bug: the SCO socket stores a sco_conn pointer without holding its own reference. When a socket close() races the Bluetooth controller's Disconnection Complete ev...