CVE-2026-74537 | BDVDB-2026-360254 Detail
LinuxLinux
Description#
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: hold sk properly in iso_conn_ready sk deref in iso_conn_ready must be done either under conn->lock, or holding a refcount, to avoid concurrent close. conn->sk is currently accessed without either: [Task 1] [Task 2] iso_sock_release iso_conn_ready sk = conn->sk lock_sock(sk) conn->sk = NULL lock_sock(sk) release_sock(sk) iso_sock_kill(sk) UAF on sk deref Fix possible UAF by holding sk refcount in iso_conn_ready(). Also recheck after lock_sock that the socket is still valid. Adjust locking so conn->sk is cleared only under lock_sock.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: adjacent.
Weaknesses#
No weakness recorded in the source data.
References#
- https://git.kernel.org/stable/c/622180fe44fb52d4d7bafcd67922959823fec263
- https://git.kernel.org/stable/c/44590dc53c9e949d2fed399a571a89c3d7d0b245
- https://git.kernel.org/stable/c/99b65f0ea3370c13687ff870330c425b6ca44e89
- https://git.kernel.org/stable/c/4e9b5e8669b3602a4e01b6d1e9539b72e42c84d5
- https://git.kernel.org/stable/c/1308d72903d792d10b82bc4ef08b8a4452308b04
- https://git.kernel.org/stable/c/0d255e63fcf3f13a570d7ac11678fa1164ac015c
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.