CVE-2026-53307
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Kernel Memory Corruption in Linux Kernel Pinconf

Publication date: 2026-06-26

Last updated on: 2026-07-06

Assigner: kernel.org

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.

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Meta Information

Published
2026-06-26
Last Modified
2026-07-06
Generated
2026-07-17
AI Q&A
2026-06-26
EPSS Evaluated
2026-07-15
NVD
CVE-2026-53307
EUVD
EUVD-2026-39842

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 6.19 (inc) to 7.0.10 (exc)
linux linux_kernel From 6.15 (inc) to 6.18.33 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-476 The product dereferences a pointer that it expects to be valid but is NULL.

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Executive Summary

This vulnerability exists in the Linux kernel's pinctrl subsystem, specifically in the pinconf-generic component. The function pinconf_generic_parse_dt_pinmux() assumes that the 'pinmux' property is always present and not empty. However, this assumption is incorrect because the 'pinmux' property might be empty even when present.

Due to this incorrect assumption, the allocator returns a special value instead of NULL, which leads to the kernel attempting to access invalid memory. This results in a crash. The vulnerability is fixed by fully validating the 'pinmux' property, including checking its length to ensure it is not empty.

Impact Analysis

This vulnerability can cause the Linux kernel to crash due to invalid memory access when processing the 'pinmux' property. Such a crash can lead to system instability, denial of service, or unexpected reboots, impacting the availability and reliability of systems running the affected kernel.

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