Bug 2422827 (CVE-2025-68316)

Summary: CVE-2025-68316 kernel: scsi: ufs: core: Fix invalid probe error return value
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-12-16 16:04:37 UTC 
In the Linux kernel, the following vulnerability has been resolved:

scsi: ufs: core: Fix invalid probe error return value

After DME Link Startup, the error return value is set to the MIPI UniPro
GenericErrorCode which can be 0 (SUCCESS) or 1 (FAILURE).  Upon failure
during driver probe, the error code 1 is propagated back to the driver
probe function which must return a negative value to indicate an error,
but 1 is not negative, so the probe is considered to be successful even
though it failed.  Subsequently, removing the driver results in an oops
because it is not in a valid state.

This happens because none of the callers of ufshcd_init() expect a
non-negative error code.

Fix the return value and documentation to match actual usage.
Comment 1 Alexander B 2025-12-16 18:08:03 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025121655-CVE-2025-68316-fe36@gregkh/T