Description
In the Linux kernel, the following vulnerability has been resolved: net/iucv: fix use-after-free of a severed iucv_path af_iucv queues not-yet-received message notifications on iucv->message_q, each holding a raw pointer to the connection's iucv_path. When the peer severs the connection, iucv_sever_path() frees that path with iucv_path_free() but leaves the notifications queued. A later recvmsg() drains message_q via iucv_process_message_q() and hands the stale path to message_receive() -- a use-after-free of the freed iucv_path. Drop the queued notifications when the path is severed; once the path is gone they can no longer be received. This also frees the notifications leaked when a socket is closed with messages still queued.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
f0703c80e5156406ad947cb67fe277725b48080f to < 5f08c5e50bcb4680069bd3f9edd5728308816dedaffectedf0703c80e5156406ad947cb67fe277725b48080f to < c24faf11bd31bfe0500aca12cbdd5a573a954a5daffectedf0703c80e5156406ad947cb67fe277725b48080f to < 99ddb33748698296a6f17b9b34aa3d16a406bb3caffectedf0703c80e5156406ad947cb67fe277725b48080f to < 23658b350b4107e8292045c2044983fd426fa15daffectedf0703c80e5156406ad947cb67fe277725b48080f to < a5bbaddf69853117f28173c3f5c8fc14c6b2ec82affectedf0703c80e5156406ad947cb67fe277725b48080f to < 900cd6d8119b7f3ae5c4bf82f922ff5957df43dbaffectedf0703c80e5156406ad947cb67fe277725b48080f to < f579582c03ed526281a8450159baf1d35099a85faffectedf0703c80e5156406ad947cb67fe277725b48080f to < be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0aaffected
Linux Linux
Default version status: affected
2.6.24affected0 to < 2.6.24unaffected5.10.265 to ≤ 5.10.*unaffected5.15.216 to ≤ 5.15.*unaffected6.1.183 to ≤ 6.1.*unaffected6.6.148 to ≤ 6.6.*unaffected6.12.101 to ≤ 6.12.*unaffected6.18.42 to ≤ 6.18.*unaffected7.1.6 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/5f08c5e50bcb4680069bd3f9edd5728308816ded ↗
- https://git.kernel.org/stable/c/c24faf11bd31bfe0500aca12cbdd5a573a954a5d ↗
- https://git.kernel.org/stable/c/99ddb33748698296a6f17b9b34aa3d16a406bb3c ↗
- https://git.kernel.org/stable/c/23658b350b4107e8292045c2044983fd426fa15d ↗
- https://git.kernel.org/stable/c/a5bbaddf69853117f28173c3f5c8fc14c6b2ec82 ↗
- https://git.kernel.org/stable/c/900cd6d8119b7f3ae5c4bf82f922ff5957df43db ↗
- https://git.kernel.org/stable/c/f579582c03ed526281a8450159baf1d35099a85f ↗
- https://git.kernel.org/stable/c/be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0a ↗