CVE-2026-98001
UnknownSummary
In the Linux kernel hwmon ltc4282 driver, ltc428_clk_provider_setup() does not initialize all members of the clk_init_data structure, in particular init.num_parents remains uninitialized despite being assumed NULL. With CONFIG_INIT_STACK_ALL_PATTERN or CONFIG_INIT_STACK_NONE enabled, this may cause a crash. The fix ensures all members are fully initialized.
Risk Assessment
An uninitialized num_parents field can cause an out-of-bounds read and kernel crash during clock provider setup. This may lead to system instability or denial of service.
Recommendation
Update the Linux kernel to a version containing the fix. On systems using the ltc4282 chip, applying the update is recommended.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: hwmon: (ltc4282) Make sure clk_init_data is fully initialized 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. ltc428_clk_provider_setup() does not fill in any parent clocks, and assumes that init.num_parents is NULL. However, the latter in uninitialized, and thus may cause a crash. 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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS