Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: fix refcounting of iso_conn iso_conn_del() and iso_chan_del() have a race that results to double-put of iso_conn: [Task hdev->workqueue] [Task 2] iso_conn_del iso_chan_del iso_conn_hold_unless_zero iso_conn_lock iso_conn_lock conn->sk = NULL iso_conn_unlock sk = iso_sock_hold(conn) <---------´ if (!sk) iso_conn_put iso_conn_put iso_conn_put /* UAF */ The extra put for !sk in iso_conn_del() is currently required since failing iso_chan_add() may leave iso_conn not associated with any sk. Fix by having iso_pi(sk)->conn own refcount when non-NULL, so iso_conn_del does not need to put it. Adjust the iso_conn_add() refcounting so that conn is put if it does not get associated with an sk.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected a58d0f5dac322e16cc75334d000666512341bde5 before 42c8bd6ac81e21200bb90f1eaf43d19352eec6d7; affected dc26097bdb864a0d5955b9a25e43376ffc1af99b before 3b921533e8aa95b77aadcf31737595578e735f3c; affected dc26097bdb864a0d5955b9a25e43376ffc1af99b before 8208b4939afb0a1977fffe902c3ca42fe0f3baaa; affected dc26097bdb864a0d5955b9a25e43376ffc1af99b before fdfde532ab1caa165fcd8985001157ac8b4db365; affected f53e7489273dc2bb307bf50f319b3762d45534f0; affected 6.12.2 before 6.12.113; affected 6.11.11 before 6.12 |
| Linux / Linux | affected 6.13; unaffected 0 before 6.13; unaffected 6.12.113 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.
References
- https://git.kernel.org/stable/c/42c8bd6ac81e21200bb90f1eaf43d19352eec6d7
- https://git.kernel.org/stable/c/3b921533e8aa95b77aadcf31737595578e735f3c
- https://git.kernel.org/stable/c/8208b4939afb0a1977fffe902c3ca42fe0f3baaa
- https://git.kernel.org/stable/c/fdfde532ab1caa165fcd8985001157ac8b4db365
ADP enrichment
No English description supplied.
No references supplied.