CVE-2026-80721

Summary

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: ISO: ensure no dangling hcon references in iso_conn

After iso_conn_del(), ISO sockets should not dereference the hcon any more. Currently, clearing iso_conn::hcon relies on iso_conn_del() releasing the last reference to the iso_conn.

Simplify this by explicitly clearing conn->hcon in iso_conn_del(), to avoid more complex reasoning on races about who holds the last reference.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxdc26097bdb864a0d5955b9a25e43376ffc1af99b < e941799c31f68e67ce0976efb38a79101f921b64affected
LinuxLinuxdc26097bdb864a0d5955b9a25e43376ffc1af99b < cdce8af9291d8a1f8916c271de029bf558d9e8ecaffected
LinuxLinuxdc26097bdb864a0d5955b9a25e43376ffc1af99b < aa9f7cb2bd3a2be998ceb739fc9a2f986eba43ebaffected
LinuxLinuxf53e7489273dc2bb307bf50f319b3762d45534f0affected
LinuxLinuxa58d0f5dac322e16cc75334d000666512341bde5affected
LinuxLinux6.11.11 < 6.12affected
LinuxLinux6.12.2 < 6.13affected
LinuxLinux6.13affected
LinuxLinux0 < 6.13unaffected
LinuxLinux6.18.44 <= 6.18.*unaffected
LinuxLinux7.1.8 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References