Bug 2376057 (CVE-2025-38144)

Summary: CVE-2025-38144 kernel: watchdog: lenovo_se30_wdt: Fix possible devm_ioremap() NULL pointer dereference in lenovo_se30_wdt_probe()
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 2025-07-03 09:02:46 UTC 
In the Linux kernel, the following vulnerability has been resolved:

watchdog: lenovo_se30_wdt: Fix possible devm_ioremap() NULL pointer dereference in lenovo_se30_wdt_probe()

devm_ioremap() returns NULL on error. Currently, lenovo_se30_wdt_probe()
does not check for this case, which results in a NULL pointer
dereference.

Add NULL check after devm_ioremap() to prevent this issue.
Comment 1 Avinash Hanwate 2025-07-03 18:13:16 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025070334-CVE-2025-38144-036b@gregkh/T