linux: In the Linux kernel, the following vulnerability has been resolved: scsi: libsas: Fix use-after-free bug in smp_exec...
CVE-2022-50422 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50422, released October 1, 2025. It is not reported as exploited. Patch Radar priority: High.
In the Linux kernel, the following vulnerability has been resolved: scsi: libsas: Fix use-after-free bug in smp_execute_task_sg() When executing SMP task failed, the smp_execute_task_sg() calls del_timer() to delete "slow_task->timer". However, if the timer handler sas_task_internal_timedout() is running, the del_timer() in smp_execute_task_sg() will not stop it and a UAF will happen. The process is shown below: (thread 1) | (thread 2) smp_execute_task_sg() | sas_task_internal_timedout() ... | del_timer() | ... | ... sas_free_task(task) | kfree(task->slow_task) //FREE| | task->slow_task->... //USE Fix by calling del_timer_sync() in smp_execute_task_sg(), which makes sure the timer handler have finished before the "task->slow_task" is deallocated.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 6.0.3-1 | DEBIAN-CVE-2022-50422 | Oct 1, 2025 |
| linux · Debian 13.5 (trixie) | 6.0.3-1 | DEBIAN-CVE-2022-50422 | Oct 1, 2025 |
| linux · Debian 14 | 6.0.3-1 | DEBIAN-CVE-2022-50422 | Oct 1, 2025 |
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