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().

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References

Other 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

Frequently Asked Questions

What is CVE-2023-54100? +

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 do I check if I'm vulnerable to CVE-2023-54100? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2023-54100

Description

References

Other References

Frequently Asked Questions

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