CVE-2026-98001 Linux CVE debrief

Who should care

Linux system administrators and maintainers responsible for ensuring the security and stability of Linux-based systems should assess exposure and apply patches or compensating controls as needed.

Why it matters

A vulnerability in the Linux kernel's hwmon ltc4282 driver has been addressed. The issue could potentially cause system crashes or instability if certain kernel configurations are enabled. Linux system administrators and maintainers should assess exposure and apply patches or compensating controls as needed.

• Potential system crashes or instability if the affected driver is in use and certain kernel configurations are enabled.
• Need to verify Linux kernel configurations and driver usage to prioritize patch deployment.
• Potential impact on system reliability and availability if the issue is not addressed.

Technical summary

The Linux kernel's hwmon ltc4282 driver had an uninitialized clk_init_data structure. This structure contains mutually-exclusive members for specifying clock parents. If not all members are initialized, subtle issues may arise, potentially causing crashes when certain kernel configurations are enabled. The issue has been resolved by ensuring all members of the structure are properly initialized. The vulnerability could lead to system instability if the affected driver is in use and specific kernel configurations are enabled. The patches provided by the Linux kernel maintainers address the issue by fully initializing the clk_init_data structure.

Defensive priority

Medium

Recommended defensive actions

• Review and apply the patches provided by the Linux kernel maintainers to ensure the hwmon ltc4282 driver is properly initialized.
• Verify that the Linux kernel configurations CONFIG_INIT_STACK_ALL_PATTERN or CONFIG_INIT_STACK_NONE are not enabled, or take compensating controls to mitigate potential crashes.
• Inventory Linux systems using the affected driver to prioritize patch deployment.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. Four source references from the Linux kernel Git repository are available, detailing the patches applied to address the issue. The Linux kernel maintainers have provided patches to ensure the hwmon ltc4282 driver is properly initialized. The patches address the issue by fully initializing the clk_init_data structure, preventing potential crashes when certain kernel configurations are enabled. The source references provide additional context on the patches and their to

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.