CVE-2023-54100
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().
How to fix
- Linux Linuxfa19c533ab19161298f0780bcc6523af88f6fd20, 5e756a59cee6a8a79b9059c5bdf0ecbf5bb8d151, 3738a230831e861503119ee2691c4a7dc56ed60a, 89f6023fc321c958a0fb11f143a6eb4544ae3940, 124027cd1a624ce0347adcd59241a9966a726b22, c5749639f2d0a1f6cbe187d05f70c2e7c544d748 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 4b1068f5d74b6cc92319bd7eba40809b1222e73f ≤ v < fa19c533ab19161298f0780bcc6523af88f6fd20, 4b1068f5d74b6cc92319bd7eba40809b1222e73f ≤ v < 5e756a59cee6a8a79b9059c5bdf0ecbf5bb8d151, 4b1068f5d74b6cc92319bd7eba40809b1222e73f ≤ v < 3738a230831e861503119ee2691c4a7dc56ed60a, 4b1068f5d74b6cc92319bd7eba40809b1222e73f ≤ v < 89f6023fc321c958a0fb11f143a6eb4544ae3940, 4b1068f5d74b6cc92319bd7eba40809b1222e73f ≤ v < 124027cd1a624ce0347adcd59241a9966a726b22, 4b1068f5d74b6cc92319bd7eba40809b1222e73f ≤ v < c5749639f2d0a1f6cbe187d05f70c2e7c544d748, 5.7 | fa19c533ab19161298f0780bcc6523af88f6fd20, 5e756a59cee6a8a79b9059c5bdf0ecbf5bb8d151, 3738a230831e861503119ee2691c4a7dc56ed60a, 89f6023fc321c958a0fb11f143a6eb4544ae3940, 124027cd1a624ce0347adcd59241a9966a726b22, c5749639f2d0a1f6cbe187d05f70c2e7c544d748 |
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