CVE-2026-19938 Use-after-free of an ATT PDU buffer when signing an outgoing Bluetooth ATT Signed Write Command fails

The Bluetooth host's ATT transmit path releases a buffer it does not own when signing fails. chansend in subsys/bluetooth/host/att.c documents and every other error exit implements the contract that on failure the caller retains ownership of the netbuf; the BTATTOPSIGNEDWRITECMD branch instead...

CVE-2026-11368

The Bluetooth host ATT layer subsys/bluetooth/host/att.c associates each in-flight ATT TX buffer with its owning channel via the static txmetadatastorage array data-attchan = chan. When a buffer's last reference is dropped, its net-buf destroy callback defers the completion handling to the system...

PT-2026-67714

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description A use-after-free issue exists in the Bluetooth host ATT layer within the subsys/bluetooth/host/att.c file. The system associates in-flight ATT TX buffers with...