Description (CNA)
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().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 4b1068f5d74b6cc92319bd7eba40809b1222e73f before fa19c533ab19161298f0780bcc6523af88f6fd20; affected 4b1068f5d74b6cc92319bd7eba40809b1222e73f before 5e756a59cee6a8a79b9059c5bdf0ecbf5bb8d151; affected 4b1068f5d74b6cc92319bd7eba40809b1222e73f before 3738a230831e861503119ee2691c4a7dc56ed60a; affected 4b1068f5d74b6cc92319bd7eba40809b1222e73f before 89f6023fc321c958a0fb11f143a6eb4544ae3940; affected 4b1068f5d74b6cc92319bd7eba40809b1222e73f before 124027cd1a624ce0347adcd59241a9966a726b22; affected 4b1068f5d74b6cc92319bd7eba40809b1222e73f before c5749639f2d0a1f6cbe187d05f70c2e7c544d748 |
| Linux / Linux | affected 5.7; unaffected 0 before 5.7; unaffected 5.10.180 through 5.10.*; unaffected 5.15.112 through 5.15.*; unaffected 6.1.29 through 6.1.*; unaffected 6.2.16 through 6.2.*; unaffected 6.3.3 through 6.3.*; unaffected 6.4 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/fa19c533ab19161298f0780bcc6523af88f6fd20
- https://git.kernel.org/stable/c/5e756a59cee6a8a79b9059c5bdf0ecbf5bb8d151
- https://git.kernel.org/stable/c/3738a230831e861503119ee2691c4a7dc56ed60a
- https://git.kernel.org/stable/c/89f6023fc321c958a0fb11f143a6eb4544ae3940
- https://git.kernel.org/stable/c/124027cd1a624ce0347adcd59241a9966a726b22
- https://git.kernel.org/stable/c/c5749639f2d0a1f6cbe187d05f70c2e7c544d748