CVE-2025-38144 watchdog: lenovo_se30_wdt: Fix possible devm_ioremap() NULL pointer dereference in lenovo_se30_wdt_probe()
A missing NULL check in the Lenovo SE30 watchdog driver can cause a kernel crash, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-38144?
CVE-2025-38144 is a medium-severity vulnerability in Linux kernel, published on 3 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-476
Which versions are affected by CVE-2025-38144?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-38144?
Apply the vendor's patch.
Is CVE-2025-38144 being exploited?
There is no known exploitation of CVE-2025-38144 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-38144, GHSA-wx3j-j8rq-8w37, UBUNTU-CVE-2025-38144.