Bug 2376102 (CVE-2025-38135)

Summary: CVE-2025-38135 kernel: serial: Fix potential null-ptr-deref in mlb_usio_probe()
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 2025-07-03 09:05:08 UTC 
In the Linux kernel, the following vulnerability has been resolved:

serial: Fix potential null-ptr-deref in mlb_usio_probe()

devm_ioremap() can return NULL on error. Currently, mlb_usio_probe()
does not check for this case, which could result in a NULL pointer
dereference.

Add NULL check after devm_ioremap() to prevent this issue.
Comment 1 Avinash Hanwate 2025-07-03 12:42:27 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025070331-CVE-2025-38135-20aa@gregkh/T