media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path

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Summary

CVECVE-2026-90238
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:17:19 UTC
Updated2026-09-17 17:17:19 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path isp4sd_pwron_and_init() holds ops_mutex via guard(mutex) and, on any init failure, jumps to err_deinit and calls isp4sd_pwroff_and_deinit(). That helper takes the same ops_mutex, re-acquiring a non-recursive mutex already held by the current thread, so any init failure deadlocks. Unwind the error path in stages instead, releasing only what each failure point acquired. This also avoids the issues that an unconditional teardown would hit at the earlier failures, such as a runtime-PM underflow from pm_runtime_resume_and_get() and MMIO access while the device is unpowered.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 4e5e7a7ddb4ab9ac35928d7dc72efc8797639dc3 74669cc3483e9729ca26b4e06a096ccdd607db64 git Not specified
CNA Linux Linux affected 4e5e7a7ddb4ab9ac35928d7dc72efc8797639dc3 ef46d80a7015269a98c9505b5912a83798799199 git Not specified
CNA Linux Linux affected 7.2 Not specified
CNA Linux Linux unaffected 7.2 semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/74669cc3483e9729ca26b4e06a096ccdd607db64 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ef46d80a7015269a98c9505b5912a83798799199 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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