Bug 2379199 (CVE-2025-38275)

Summary: CVE-2025-38275 kernel: phy: qcom-qmp-usb: Fix an NULL vs IS_ERR() bug
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-07-10 08:03:09 UTC 
In the Linux kernel, the following vulnerability has been resolved:

phy: qcom-qmp-usb: Fix an NULL vs IS_ERR() bug

The qmp_usb_iomap() helper function currently returns the raw result of
devm_ioremap() for non-exclusive mappings. Since devm_ioremap() may return
a NULL pointer and the caller only checks error pointers with IS_ERR(),
NULL could bypass the check and lead to an invalid dereference.

Fix the issue by checking if devm_ioremap() returns NULL. When it does,
qmp_usb_iomap() now returns an error pointer via IOMEM_ERR_PTR(-ENOMEM),
ensuring safe and consistent error handling.
Comment 1 Avinash Hanwate 2025-07-11 09:17:52 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025071008-CVE-2025-38275-4db0@gregkh/T