scsi: libsas: Fix use-after-free bug in smp_execute_task_sg() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.16 % · percentile 6 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
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.
Weaknesses (CWE)
- CWE-416 — Use After Free
References
- https://git.kernel.org/stable/c/117331a2a5227fb4369c2a1f321d3e3e2e2ef8fe
- https://git.kernel.org/stable/c/a9e5176ead6de64f572ad5c87a72825d9d3c82ae
- https://git.kernel.org/stable/c/e45a1516d2933703a4823d9db71e17c3abeba24f
- https://git.kernel.org/stable/c/f7a785177611ffc97d645fcbc196e6de6ad2421d
- https://git.kernel.org/stable/c/2e12ce270f0d926085c1209cc90397e307deef97
- https://git.kernel.org/stable/c/46ba53c30666717cb06c2b3c5d896301cd00d0c0
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
European references
- ENISA EUVD · EUVD-2025-32865
- GCVE · GCVE-0-2022-50422
CERT-FR advisories
- CERTFR-2025-AVI-0921 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0895 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 2.6.19 < 5.4.220cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.150cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.75cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 5.19.17cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.0 < 6.0.3
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 2908d778ab3e244900c310974e1fc1c69066e450 < 117331a2a5227fb4369c2a1f321d3e3e2e2ef8fe ; affected 2908d778ab3e244900c310974e1fc1c69066e450 < a9e5176ead6de64f572ad5c87a72825d9d3c82ae ; affected 2908d778ab3e244900c310974e1fc1c69066e450 < e45a1516d2933703a4823d9db71e17c3abeba24f ; affected 2908d778ab3e244900c310974e1fc1c69066e450 < f7a785177611ffc97d645fcbc196e6de6ad2421d ; affected 2908d778ab3e244900c310974e1fc1c69066e450 < 2e12ce270f0d926085c1209cc90397e307deef97 ; affected 2908d778ab3e244900c310974e1fc1c69066e450 < 46ba53c30666717cb06c2b3c5d896301cd00d0c0 |
| Linux · Linux | affected 2.6.19 ; unaffected 0 < 2.6.19 ; unaffected 5.4.220 ≤ 5.4.* ; unaffected 5.10.150 ≤ 5.10.* ; unaffected 5.15.75 ≤ 5.15.* ; unaffected 5.19.17 ≤ 5.19.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |