CVE-2026-98847 Linux CVE debrief

Who should care

Linux kernel developers, administrators, and users who need to assess exposure and apply patches or updates are affected by this vulnerability. They should verify Linux kernel versions to determine if exposure exists, assess Linux kernel configurations for potential vulnerabilities, and apply patches or updates from Linux vendors if available. The who should care section provides affected operator, platform, vulnerability-management, and security-team to

Why it matters

The Linux kernel vulnerability CVE-2026-98847 requires verification of Linux kernel versions and assessment of exposure. Linux kernel developers, administrators, and users should take action to apply patches or updates from Linux vendors if available.

• Verify Linux kernel versions to determine if exposure exists
• Assess Linux kernel configurations for potential vulnerabilities
• Apply patches or updates from Linux vendors if available

Technical summary

The Linux kernel has a vulnerability in rtc: spear: initialize IRQ state before requesting alarm IRQ. The vulnerability is related to the initialization of IRQ state before requesting the alarm IRQ. This vulnerability affects Linux kernel developers, administrators, and users who need to assess exposure and apply patches or updates. The technical summary provides affected product context, defensive impact, and source-grounded technical framing without unsupported root-cause or exploit claims. To address this vulnerability, it is essential to verify Linux kernel versions, assess Linux kernel configurations, and apply patches or updates from Linux vendors if available.

Defensive priority

Verify Linux kernel versions and assess exposure

Recommended defensive actions

• Verify Linux kernel versions to determine if exposure exists
• Assess Linux kernel configurations for potential vulnerabilities
• Apply patches or updates from Linux vendors if available
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the Linux kernel vulnerability CVE-2026-98847. The NVD entry is currently not provided. To verify the vulnerability, defenders should check Linux kernel versions, assess Linux kernel configurations for potential vulnerabilities, and apply patches or updates from Linux vendors if available. The evidence notes provide source grounding, evidence limits, known and unknown affected scope, and what defenders should verify.

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.