Bug 2419913 (CVE-2023-53758)

Summary: CVE-2023-53758 kernel: spi: atmel-quadspi: Free resources even if runtime resume failed in .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 2025-12-08 07:08:20 UTC 
In the Linux kernel, the following vulnerability has been resolved:

spi: atmel-quadspi: Free resources even if runtime resume failed in .remove()

An early error exit in atmel_qspi_remove() doesn't prevent the device
unbind. So this results in an spi controller with an unbound parent
and unmapped register space (because devm_ioremap_resource() is undone).
So using the remaining spi controller probably results in an oops.

Instead unregister the controller unconditionally and only skip hardware
access and clk disable.

Also add a warning about resume failing and return zero unconditionally.
The latter has the only effect to suppress a less helpful error message by
the spi core.
Comment 1 Jon Moroney 2025-12-08 20:16:44 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025120844-CVE-2023-53758-93a2@gregkh/T