CVE-2026-53307 pinctrl: pinconf-generic: Fully validate 'pinmux' property

What is CVE-2026-53307?

CVE-2026-53307 is a medium-severity vulnerability in Linux kernel, published on 26 Jun 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: pinconf-generic: Fully validate 'pinmux' property

The pinconf_generic_parse_dt_pinmux() assumes that the 'pinmux' property is not empty when present. This might be not true. With that, the allocator will give a special value in return and not NULL which lead to the crash when trying to access that (invalid) memory. Fix that by fully validating 'pinmux' value, including its length.

Weakness: CWE-476

Which versions are affected by CVE-2026-53307?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-53307?

Apply the vendor's patch.

Is CVE-2026-53307 being exploited?

There is no known exploitation of CVE-2026-53307 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2026-53307, DEBIAN-CVE-2026-53307, GHSA-4qpg-p2c6-564v, UBUNTU-CVE-2026-53307.