CVE-2026-46282

Analyzed Analyzed - Analysis Complete

NULL Pointer Dereference in Linux Kernel IIO ADMV1013 Driver

Publication date: 2026-06-08

Last updated on: 2026-07-08

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: iio: frequency: admv1013: fix NULL pointer dereference on str When device_property_read_string() fails, str is left uninitialized but the code falls through to strcmp(str, ...), dereferencing a garbage pointer. Replace manual read/strcmp with device_property_match_property_string() and consolidate the SE mode enums into a single sequential enum, mapping to hardware register values via a switch consistent with other bitfields in the driver. Several cleanup patches have been applied to this driver recently so this will need a manual backport.

CVSS Scores

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Meta Information

Published

2026-06-08

Last Modified

2026-07-08

Generated

2026-07-19

AI Q&A

2026-06-08

EPSS Evaluated

2026-07-18

NVD

CVE-2026-46282

EUVD

EUVD-2026-35147

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	From 5.17 (inc) to 6.12.86 (exc)
linux	linux_kernel	From 6.13 (inc) to 6.18.27 (exc)
linux	linux_kernel	From 6.19 (inc) to 7.0.4 (exc)

Helpful Resources

Exploitability

CWE

KEV

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

Attack-Flow Graph

Executive Summary

This vulnerability occurs in the Linux kernel's iio frequency admv1013 driver. When the function device_property_read_string() fails, a string variable (str) remains uninitialized. However, the code continues and calls strcmp(str, ...), which dereferences this uninitialized (garbage) pointer, leading to a NULL pointer dereference.

The fix involved replacing the manual read and strcmp operations with device_property_match_property_string(), and consolidating the SE mode enums into a single sequential enum that maps to hardware register values via a switch statement, consistent with other bitfields in the driver.

Impact Analysis

This vulnerability can cause a NULL pointer dereference in the Linux kernel driver, which may lead to a kernel crash or system instability when the affected driver is used. This could result in denial of service or unexpected behavior on systems running the vulnerable driver.

Mitigation Strategies

To mitigate this vulnerability, update the Linux kernel to a version that includes the fix for the admv1013 driver NULL pointer dereference issue.

The fix involves replacing manual read/strcmp calls with device_property_match_property_string() and consolidating SE mode enums, so applying the relevant patches or upgrading to a patched kernel version is necessary.

Since several cleanup patches have been applied recently, manual backporting may be required if you are using an older kernel version.

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