Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: fix leaking sk after socket release iso_sock_kill() tests !sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket || sock_flag(sk, SOCK_DEAD) for early return, but this is always true since sock_orphan(sk) sets SOCK_DEAD, so the sk reference released by socket always leaks, iso_sock_destruct is never called. The socket reference also leaks when __iso_sock_close() does not set SOCK_ZAPPED, since iso_conn_del() does not call iso_sock_kill() after zapping. Fix by replacing SOCK_DEAD by BT_SK_KILLED flag that is not used for something else, and lock_sock to ensure iso_sock_kill() puts sk only after socket release only once. Release and iso_conn_del may run concurrently. Call iso_sock_kill() from iso_conn_del() to clean sk up after zapping. Remove call to iso_sock_kill() from iso_sock_close(), as it's generally no-op there.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected ccf74f2390d60a2f9a75ef496d2564abb478f46a before 96ed3c772c08e7a91c399567f412618e43231023; affected ccf74f2390d60a2f9a75ef496d2564abb478f46a before e76a0ae6542ae43241b2147bacf4990e7ae5316a; affected ccf74f2390d60a2f9a75ef496d2564abb478f46a before e30e5ca63c8fbe3cd505fbb419bb547760cda633; affected ccf74f2390d60a2f9a75ef496d2564abb478f46a before ce57442a379212fe3fda59c9437ee8217eceb5b1 |
| Linux / Linux | affected 6.0; unaffected 0 before 6.0; unaffected 6.12.103 through 6.12.*; unaffected 6.18.44 through 6.18.*; unaffected 7.1.8 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.