CVE-2026-23387 pinctrl: cirrus: cs42l43: Fix double-put in cs42l43_pin_probe()
A double-free vulnerability in the Linux kernel's cs42l43 pinctrl driver can cause a system crash during device probe.
- 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-2026-23387?
CVE-2026-23387 is a high-severity memory corruption vulnerability in Linux kernel, published on 25 Mar 2026. 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: cirrus: cs42l43: Fix double-put in cs42l43_pin_probe()
devm_add_action_or_reset() already invokes the action on failure, so the explicit put causes a double-put.
Weakness: CWE-415
Which versions are affected by CVE-2026-23387?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-23387?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-23387 being exploited?
There is no known exploitation of CVE-2026-23387 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-23387, DEBIAN-CVE-2026-23387, GHSA-q9cp-3qrm-w4v3, ROOT-OS-DEBIAN-13-CVE-2026-23387, ROOT-OS-UBUNTU-2404-CVE-2026-23387, UBUNTU-CVE-2026-23387.