CVE-2023-54319 pinctrl: at91-pio4: check return value of devm_kasprintf()
A missing null check in the at91-pio4 pinctrl driver can cause a kernel crash if memory allocation fails, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-54319?
CVE-2023-54319 is a vulnerability in Linux, published on 30 Dec 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:
pinctrl: at91-pio4: check return value of devm_kasprintf()
devm_kasprintf() returns a pointer to dynamically allocated memory. Pointer could be NULL in case allocation fails. Check pointer validity. Identified with coccinelle (kmerr.cocci script).
Depends-on: 1c4e5c470a56 ("pinctrl: at91: use devm_kasprintf() to avoid potential leaks") Depends-on: 5a8f9cf269e8 ("pinctrl: at91-pio4: use proper format specifier for unsigned int")
Which versions are affected by CVE-2023-54319?
How do I fix CVE-2023-54319?
Apply the vendor's patch.
Is CVE-2023-54319 being exploited?
There is no known exploitation of CVE-2023-54319 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-54319, DEBIAN-CVE-2023-54319, GHSA-2jx2-7jpf-5pr4, UBUNTU-CVE-2023-54319.