CVE-2024-46843

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0cab4023ec7b49b18145f74ab8389678d6d58878 < 2f49e05d6b58d660f035a75ff96b77071b4bd5edaffected
LinuxLinux0cab4023ec7b49b18145f74ab8389678d6d58878 < 3844586e9bd9845140e1078f1e61896b576ac536affected
LinuxLinux0cab4023ec7b49b18145f74ab8389678d6d58878 < 7cbff570dbe8907e23bba06f6414899a0fbb2fccaffected
LinuxLinux6.3affected
LinuxLinux0 < 6.3unaffected
LinuxLinux6.6.51 <= 6.6.*unaffected
LinuxLinux6.10.10 <= 6.10.*unaffected
LinuxLinux6.11 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References