Bug 2395330 (CVE-2023-53177)

Summary: CVE-2023-53177 kernel: media: hi846: fix usage of pm_runtime_get_if_in_use()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2025-09-15 15:07:52 UTC 
In the Linux kernel, the following vulnerability has been resolved:

media: hi846: fix usage of pm_runtime_get_if_in_use()

pm_runtime_get_if_in_use() does not only return nonzero values when
the device is in use, it can return a negative errno too.

And especially during resuming from system suspend, when runtime pm
is not yet up again, -EAGAIN is being returned, so the subsequent
pm_runtime_put() call results in a refcount underflow.

Fix system-resume by handling -EAGAIN of pm_runtime_get_if_in_use().
Comment 1 Jon Moroney 2025-09-15 21:35:10 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091555-CVE-2023-53177-9a91@gregkh/T