n 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.
Configuration 1 (hide)
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11 Dec 2025, 18:24
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux linux Kernel
Linux |
|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| CWE | CWE-416 | |
| References | () https://git.kernel.org/stable/c/117331a2a5227fb4369c2a1f321d3e3e2e2ef8fe - Patch | |
| References | () https://git.kernel.org/stable/c/2e12ce270f0d926085c1209cc90397e307deef97 - Patch | |
| References | () https://git.kernel.org/stable/c/46ba53c30666717cb06c2b3c5d896301cd00d0c0 - Patch | |
| References | () https://git.kernel.org/stable/c/a9e5176ead6de64f572ad5c87a72825d9d3c82ae - Patch | |
| References | () https://git.kernel.org/stable/c/e45a1516d2933703a4823d9db71e17c3abeba24f - Patch | |
| References | () https://git.kernel.org/stable/c/f7a785177611ffc97d645fcbc196e6de6ad2421d - Patch |
02 Oct 2025, 19:12
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Published : 2025-10-01 12:15
Updated : 2026-01-14 18:16
NVD link : CVE-2022-50422
Mitre link : CVE-2022-50422
CVE.ORG link : CVE-2022-50422
JSON object : View
Use After Free