CVE-2022-50422
published 2025-10-01CVE-2022-50422: 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…
PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.15%
4.7th percentile
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.
Affected
17 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.0.3-1 (bookworm) | linux 6.0.3-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 2908d778ab3e244900c310974e1fc1c69066e450 < 117331a2a5227fb4369c2a1f321d3e3e2e2ef8fe | 117331a2a5227fb4369c2a1f321d3e3e2e2ef8fe |
| linux | linux | >= 2908d778ab3e244900c310974e1fc1c69066e450 < a9e5176ead6de64f572ad5c87a72825d9d3c82ae | a9e5176ead6de64f572ad5c87a72825d9d3c82ae |
| linux | linux | >= 2908d778ab3e244900c310974e1fc1c69066e450 < e45a1516d2933703a4823d9db71e17c3abeba24f | e45a1516d2933703a4823d9db71e17c3abeba24f |
| linux | linux | >= 2908d778ab3e244900c310974e1fc1c69066e450 < f7a785177611ffc97d645fcbc196e6de6ad2421d | f7a785177611ffc97d645fcbc196e6de6ad2421d |
| linux | linux | >= 2908d778ab3e244900c310974e1fc1c69066e450 < 2e12ce270f0d926085c1209cc90397e307deef97 | 2e12ce270f0d926085c1209cc90397e307deef97 |
| linux | linux | >= 2908d778ab3e244900c310974e1fc1c69066e450 < 46ba53c30666717cb06c2b3c5d896301cd00d0c0 | 46ba53c30666717cb06c2b3c5d896301cd00d0c0 |
| linux | linux_kernel | >= 0 < 5.10.158-1 | 5.10.158-1 |
| linux | linux_kernel | >= 0 < 6.0.3-1 | 6.0.3-1 |
| linux | linux_kernel | >= 0 < 6.0.3-1 | 6.0.3-1 |
| linux | linux_kernel | >= 0 < 6.0.3-1 | 6.0.3-1 |
| linux | linux_kernel | >= 2.6.19 < 5.4.220 | 5.4.220 |
| linux | linux_kernel | >= 5.11 < 5.15.75 | 5.15.75 |
| linux | linux_kernel | >= 5.16 < 5.19.17 | 5.19.17 |
| linux | linux_kernel | >= 5.5 < 5.10.150 | 5.10.150 |
| linux | linux_kernel | >= 6.0 < 6.0.3 | 6.0.3 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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Red Hat
kernel: scsi: libsas: Fix use-after-free bug in smp_execute_task_sg()
vendor_redhat·2025-10-01·CVSS 7.8
CVE-2022-50422 [HIGH] CWE-664 kernel: scsi: libsas: Fix use-after-free bug in smp_execute_task_sg()
kernel: scsi: libsas: Fix use-after-free bug in smp_execute_task_sg()
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-
Debian
CVE-2022-50422: linux - In the Linux kernel, the following vulnerability has been resolved: scsi: libsa...
vendor_debian·2022·CVSS 7.8
CVE-2022-50422 [HIGH] CVE-2022-50422: linux - In the Linux kernel, the following vulnerability has been resolved: scsi: libsa...
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.
Scope: local
bookworm: resolved (fixed in 6
GHSA
GHSA-j5vv-gj42-cwrm: 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
ghsa_unreviewed·2025-10-01
CVE-2022-50422 [HIGH] CWE-416 GHSA-j5vv-gj42-cwrm: 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
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.
OSV
CVE-2022-50422: 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 t
osv·2025-10-01·CVSS 7.8
CVE-2022-50422 [HIGH] CVE-2022-50422: 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 t
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.
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/117331a2a5227fb4369c2a1f321d3e3e2e2ef8fehttps://git.kernel.org/stable/c/2e12ce270f0d926085c1209cc90397e307deef97https://git.kernel.org/stable/c/46ba53c30666717cb06c2b3c5d896301cd00d0c0https://git.kernel.org/stable/c/a9e5176ead6de64f572ad5c87a72825d9d3c82aehttps://git.kernel.org/stable/c/e45a1516d2933703a4823d9db71e17c3abeba24fhttps://git.kernel.org/stable/c/f7a785177611ffc97d645fcbc196e6de6ad2421d
2025-10-01
Published