SB20261022261 - Use of Uninitialized Variable in Linux kernel iio frequency driver

Description

This security bulletin contains information about 1 vulnerability.

1) Use of Uninitialized Variable (CVE-ID: CVE-2026-98667)

CWE-ID: CWE-457 - Use of Uninitialized Variable

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to potentially cause a denial of service through a kernel crash.

The vulnerability exists due to use of uninitialized variables in the Linux kernel's adf4377_clk_register() function when registering device clocks. A local user can potentially trigger clock registration that uses uninitialized clock-parent metadata to cause a kernel crash.

The issue is exposed when CONFIG_INIT_STACK_ALL_PATTERN or CONFIG_INIT_STACK_NONE is enabled.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/6564f394a4a95fad534643a6ca0f1d36ff081799
• https://git.kernel.org/stable/c/e787fd23d5063c61582c3c27522240b6e6703fde