Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Fix setup list UAF on proc write error snd_pcm_oss_proc_write() links a newly allocated setup entry into the OSS setup list before duplicating the task name. If the task-name allocation fails, the error path frees the already linked entry and leaves setup_list pointing at freed memory. A later OSS device open can then walk the stale list entry in snd_pcm_oss_look_for_setup() and dereference freed memory. Allocate the task name and initialize the setup entry before publishing the entry on setup_list. Also fetch the initial proc read iterator only after taking setup_mutex, so all setup_list traversal follows the same list lifetime rules.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 060d77b9c04acd7aef60790398a53f731db8c8fe before d9df965284abde27ba6bfbdfc8407697cf6802f1; affected 060d77b9c04acd7aef60790398a53f731db8c8fe before 8be4efd0dc0093eb7a02ad1aac936bca2a1f04ce; affected 060d77b9c04acd7aef60790398a53f731db8c8fe before e13922bb97b4e6f94f8ac02d034f2d4bd65eeb3c; affected 060d77b9c04acd7aef60790398a53f731db8c8fe before be387230dc22d870afd0e5d35912b07c2bc323bd; affected 060d77b9c04acd7aef60790398a53f731db8c8fe before 4cc54bdd54b337e77115be5b55577d1c58608eae |
| Linux / Linux | affected 2.6.17; unaffected 0 before 2.6.17; unaffected 6.6.160 through 6.6.*; unaffected 6.12.93 through 6.12.*; unaffected 6.18.35 through 6.18.*; unaffected 7.0.12 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/d9df965284abde27ba6bfbdfc8407697cf6802f1
- https://git.kernel.org/stable/c/8be4efd0dc0093eb7a02ad1aac936bca2a1f04ce
- https://git.kernel.org/stable/c/e13922bb97b4e6f94f8ac02d034f2d4bd65eeb3c
- https://git.kernel.org/stable/c/be387230dc22d870afd0e5d35912b07c2bc323bd
- https://git.kernel.org/stable/c/4cc54bdd54b337e77115be5b55577d1c58608eae