Bug 2365238 (CVE-2025-37842)

Summary: CVE-2025-37842 kernel: spi: fsl-qspi: use devm function instead of driver remove
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-05-09 07:01:12 UTC 
In the Linux kernel, the following vulnerability has been resolved:

spi: fsl-qspi: use devm function instead of driver remove

Driver use devm APIs to manage clk/irq/resources and register the spi
controller, but the legacy remove function will be called first during
device detach and trigger kernel panic. Drop the remove function and use
devm_add_action_or_reset() for driver cleanup to ensure the release
sequence.

Trigger kernel panic on i.MX8MQ by
echo 30bb0000.spi >/sys/bus/platform/drivers/fsl-quadspi/unbind
Comment 1 Michal Findra 2025-05-09 09:26:32 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050916-CVE-2025-37842-8da3@gregkh/T