CVE-2024-46843: scsi: ufs: core: Remove SCSI host only if added
First published: Fri Sep 27 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Remove SCSI host only if added If host tries to remove ufshcd driver from a UFS device it would cause a kernel panic if ufshcd_async_scan fails during ufshcd_probe_hba before adding a SCSI host with scsi_add_host and MCQ is enabled since SCSI host has been defered after MCQ configuration introduced by commit 0cab4023ec7b ("scsi: ufs: core: Defer adding host to SCSI if MCQ is supported"). To guarantee that SCSI host is removed only if it has been added, set the scsi_host_added flag to true after adding a SCSI host and check whether it is set or not before removing it.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <6.6.51 | |
| Linux Linux kernel | >=6.7<6.10.10 | |
| debian/linux | <=5.10.223-1<=5.10.226-1<=6.1.115-1<=6.1.119-1 | 6.11.10-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/stable/c/2f49e05d6b58d660f035a75ff96b77071b4bd5ed
- https://git.kernel.org/stable/c/3844586e9bd9845140e1078f1e61896b576ac536
- https://git.kernel.org/stable/c/7cbff570dbe8907e23bba06f6414899a0fbb2fcc
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-46843
- https://nvd.nist.gov/vuln/detail/CVE-2024-46843
- https://launchpad.net/bugs/cve/CVE-2024-46843
- https://security-tracker.debian.org/tracker/CVE-2024-46843
- https://ubuntu.com/security/CVE-2024-46843
- https://git.kernel.org/linus/7cbff570dbe8907e23bba06f6414899a0fbb2fcc
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