CVE-2026-92478 Linux CVE debrief

Who should care

Linux system administrators and security teams should be aware of this vulnerability and assess their exposure, particularly for systems with version 7.1 or earlier. They should prioritize verifying inventory and assessing exposure for Linux systems, particularly those with version 7.1 or earlier, to determine if they are affected by this vulnerability.

Why it matters

Defenders should prioritize verifying inventory and assessing exposure for Linux systems, particularly those with version 7.1 or earlier, to determine if they are affected by this vulnerability.

• Verify Linux system inventory to identify potentially affected versions
• Assess exposure for Linux systems with version 7.1 or earlier
• Review and apply patches or updates for affected Linux systems

Technical summary

The Linux kernel's scsi: ufs: core has a vulnerability related to validating connected lane counts. The connected lane count is used by TX equalization code to index arrays sized by UFS_MAX_LANES. Rejecting zero and out-of-range RX or TX lane counts can prevent potential issues. This vulnerability affects Linux systems, particularly those with version 7.1 or earlier. Defenders should prioritize verifying inventory and assessing exposure for Linux systems, particularly those with version 7.1 or earlier, to determine if they are affected by this vulnerability.

Defensive priority

Defenders should prioritize verifying inventory and assessing exposure for Linux systems, particularly those with version 7.1 or earlier, to determine if they are affected by this vulnerability.

Recommended defensive actions

• Verify Linux system inventory to identify potentially affected versions
• Assess exposure for Linux systems with version 7.1 or earlier
• Review and apply patches or updates for affected Linux systems
• 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 on the vulnerability, including affected versions and references to source code changes. The Linux kernel's scsi: ufs: core has a vulnerability related to validating connected lane counts. The connected lane count is used by TX equalization code to index arrays sized by UFS_MAX_LANES. Rejecting zero and out-of-range RX or TX lane counts can prevent potential issues. Defenders should verify inventory and assess exposure for Linux systems, particularly those with version 7.1 or earlier.

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.