CVE-2026-98667

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

iio: frequency: adf4377: Fully initialize clk_init_data and clk_parent_data

The clk_init_data structure contains several mutually-exclusive members

for different methods to specify the possible parents of a clock,

prompting drivers to initialize only the members they need. However,

not initializing all members may cause subtle issues, which are only

exposed when CONFIG_INIT_STACK_ALL_PATTERN or CONFIG_INIT_STACK_NONE is

enabled.

adf4377_clk_register() fills in init.parent_data, and assumes that

init.parent_names is NULL. However, the latter is uninitialized, and

thus may cause a crash.

Similarly, adf4377_clk_register() fills in only parent_data.fw_name,

leaving other members of the clk_parent_data structure uninitialized.

Make sure all members are fully initialized, to fix such bugs, and to

avoid future breakage when converting drivers to a different method for

specifying the parents.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References