Bug 2400607 (CVE-2025-39893)

Summary: CVE-2025-39893 kernel: spi: spi-qpic-snand: unregister ECC engine on probe error and device remove
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 2025-10-01 08:02:22 UTC 
In the Linux kernel, the following vulnerability has been resolved:

spi: spi-qpic-snand: unregister ECC engine on probe error and device remove

The on-host hardware ECC engine remains registered both when
the spi_register_controller() function returns with an error
and also on device removal.

Change the qcom_spi_probe() function to unregister the engine
on the error path, and add the missing unregistering call to
qcom_spi_remove() to avoid possible use-after-free issues.
Comment 1 Alexander B 2025-10-02 11:05:57 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025100115-CVE-2025-39893-6653@gregkh/T