Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net/af_iucv: fix NULL deref in afiucv_hs_callback_syn() afiucv_hs_callback_syn() allocates the child socket with GFP_ATOMIC. If the allocation fails, nsk is NULL. The connection-refused path is entered when the listen state check fails, the accept backlog is full, or nsk is NULL. The code unconditionally calls iucv_sock_kill(nsk) in that path. iucv_sock_kill() does not accept a NULL socket pointer and immediately dereferences sk via sock_flag(sk, SOCK_ZAPPED). When nsk is NULL, calling iucv_sock_kill(nsk) results in a NULL pointer dereference. Only call iucv_sock_kill() when a child socket was successfully allocated.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 3881ac441f642d56503818123446f7298442236b before 6a1eb5b46c19073f8153b7e2c19b408cf353aaf1; affected 3881ac441f642d56503818123446f7298442236b before c0b6e2ae90613c2fea7eaf3faa20985c6c2a1953; affected 3881ac441f642d56503818123446f7298442236b before 07e21deb3664001995e0a456dd627ab7dbe127ec; affected 3881ac441f642d56503818123446f7298442236b before 8bb111f87ded6acb9837ec9b45d6f02cda94c51f; affected 3881ac441f642d56503818123446f7298442236b before 46453b16f38ec7147351f7447e2aec6ea330f7b3; affected 3881ac441f642d56503818123446f7298442236b before 33736ff5e7c97d3348ce812e8bd2e125d840743c; affected 3881ac441f642d56503818123446f7298442236b before 0e857185591fe79934427c9c0c1c31dc776be134; affected 3881ac441f642d56503818123446f7298442236b before 47a5116e56a6b6fe1e909f244e39cd0fc26ceee4 |
| Linux / Linux | affected 3.2; unaffected 0 before 3.2; unaffected 5.10.265 through 5.10.*; unaffected 5.15.216 through 5.15.*; unaffected 6.1.183 through 6.1.*; unaffected 6.6.148 through 6.6.*; unaffected 6.12.101 through 6.12.*; unaffected 6.18.42 through 6.18.*; unaffected 7.1.6 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/6a1eb5b46c19073f8153b7e2c19b408cf353aaf1
- https://git.kernel.org/stable/c/c0b6e2ae90613c2fea7eaf3faa20985c6c2a1953
- https://git.kernel.org/stable/c/07e21deb3664001995e0a456dd627ab7dbe127ec
- https://git.kernel.org/stable/c/8bb111f87ded6acb9837ec9b45d6f02cda94c51f
- https://git.kernel.org/stable/c/46453b16f38ec7147351f7447e2aec6ea330f7b3
- https://git.kernel.org/stable/c/33736ff5e7c97d3348ce812e8bd2e125d840743c
- https://git.kernel.org/stable/c/0e857185591fe79934427c9c0c1c31dc776be134
- https://git.kernel.org/stable/c/47a5116e56a6b6fe1e909f244e39cd0fc26ceee4
ADP enrichment
No English description supplied.
No references supplied.