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CVE-2026-98893 Linux CVE debrief

The Linux kernel has a vulnerability in the firmware: arm_scmi component that has been resolved. The vulnerability involves validating the SENSOR_UPDATE payload size to prevent truncated update notifications from being parsed. This vulnerability was published on 2026-10-23T11:37:54.017Z and last modified on 2026-10-26T06:56:19.302Z. The vulnerability affects Linux kernel systems and firmware: arm_scmi components, and defenders should be aware of this vulnerability and take steps to verify and patch their systems.

Vendor
Linux
Product
Unknown
CVSS
Unknown
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-23
Original CVE updated
2026-10-26
Advisory published
2026-10-23
Advisory updated
2026-10-26

Who should care

Defenders responsible for Linux kernel systems and firmware: arm_scmi components should be aware of this vulnerability and take steps to verify and patch their systems. Defenders should prioritize verifying Linux kernel versions and applying patches to prevent potential issues with the firmware: arm_scmi component. The vulnerability affects Linux kernel systems and firmware: arm_scmi components, and defenders should review system configurations to ensure

Why it matters

The Linux kernel vulnerability in the firmware: arm_scmi component requires verification and patching to prevent potential issues. Defenders should prioritize verifying Linux kernel versions and applying patches.

  • Verify Linux kernel versions to determine if vulnerable
  • Apply patches to prevent potential issues with the firmware: arm_scmi component
  • Review system configurations to ensure proper validation of the firmware: arm_scmi component

Technical summary

The Linux kernel has a vulnerability in the firmware: arm_scmi component that has been resolved. The vulnerability involves validating the SENSOR_UPDATE payload size to prevent truncated update notifications from being parsed. The vulnerability affects Linux kernel systems and firmware: arm_scmi components, and defenders should be aware of this vulnerability and take steps to verify and patch their systems. The vulnerability has been resolved, but the impact on affected systems is not well understood. Defenders should prioritize verifying Linux kernel versions and applying patches to prevent potential issues with the firmware: arm_scmi component.

Defensive priority

Defenders should prioritize verifying the Linux kernel versions and applying patches to prevent potential issues with the firmware: arm_scmi component.

Recommended defensive actions

  • Verify Linux kernel versions and apply patches to prevent potential issues with the firmware: arm_scmi component
  • Review system configurations and ensure that the firmware: arm_scmi component is properly validated
  • Monitor system logs for potential issues related to the firmware: arm_scmi component
  • 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 source item provide details about the vulnerability and its resolution in the Linux kernel. However, there is limited information about potential exploitation or affected systems. Defenders should verify Linux kernel versions and apply patches to prevent potential issues with the firmware: arm_scmi component. The vulnerability has been resolved, but the impact on affected systems is not well understood.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-98893 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-98893

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-98893 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-98893

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • firmware: arm_scmi: Validate SENSOR_UPDATE payload size

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/98xxx/CVE-2026-98893.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/e543d60f966a5f5c92298720c2fd1810f85a6be3

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/87a72e75f7560ea45cd28870194eaa153dd19e75

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/1bbe431fc59704d012660647516f6f94ddd82564

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/c148ff2f5a168e0bc41d801efca6ee35a376cfcb

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/767789a58ae0d65ec3028e5b5b4da82210355d00

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/32bc5496b48174dbca1f187f710955ee4d9527a1

    Supplemental source

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.