Description
In the Linux kernel, the following vulnerability has been resolved:
scsi: qedi: Fix use after free bug in qedi_remove()
In qedi_probe() we call __qedi_probe() which initializes &qedi->recovery_work with qedi_recovery_handler() and &qedi->board_disable_work with qedi_board_disable_work().
When qedi_schedule_recovery_handler() is called, schedule_delayed_work() will finally start the work.
In qedi_remove(), which is called to remove the driver, the following sequence may be observed:
Fix this by finishing the work before cleanup in qedi_remove().
CPU0 CPU1
|qedi_recovery_handler qedi_remove | __qedi_remove | iscsi_host_free | scsi_host_put | //free shost | |iscsi_host_for_each_session |//use qedi->shost
Cancel recovery_work and board_disable_work in __qedi_remove().
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 4b1068f5d74b6cc92319bd7eba40809b1222e73f, < fa19c533ab19161298f0780bcc6523af88f6fd20; >= 4b1068f5d74b6cc92319bd7eba40809b1222e73f, < 5e756a59cee6a8a79b9059c5bdf0ecbf5bb8d151; >= 4b1068f5d74b6cc92319bd7eba40809b1222e73f, < 3738a230831e861503119ee2691c4a7dc56ed60a; >= 4b1068f5d74b6cc92319bd7eba40809b1222e73f, < 89f6023fc321c958a0fb11f143a6eb4544ae3940; >= 4b1068f5d74b6cc92319bd7eba40809b1222e73f, < 124027cd1a624ce0347adcd59241a9966a726b22; >= 4b1068f5d74b6cc92319bd7eba40809b1222e73f, < c5749639f2d0a1f6cbe187d05f70c2e7c544d748 |
| Linux | Linux | 5.7 |
References
- https://git.kernel.org/stable/c/124027cd1a624ce0347adcd59241a9966a726b22
- https://git.kernel.org/stable/c/3738a230831e861503119ee2691c4a7dc56ed60a
- https://git.kernel.org/stable/c/5e756a59cee6a8a79b9059c5bdf0ecbf5bb8d151
- https://git.kernel.org/stable/c/89f6023fc321c958a0fb11f143a6eb4544ae3940
- https://git.kernel.org/stable/c/c5749639f2d0a1f6cbe187d05f70c2e7c544d748
- https://git.kernel.org/stable/c/fa19c533ab19161298f0780bcc6523af88f6fd20
Timeline
- Published
- Dec 24, 2025
- Last modified
- Aug 4, 2026
- NVD status
- Deferred