CVE-2026-93262 Linux CVE debrief

Who should care

Linux kernel maintainers, users, and administrators should assess exposure and prioritize verification of affected systems. Affected operator, platform, vulnerability-management, and security-team impact should be considered. Linux kernel versions and configurations should be verified to determine exposure. Prioritization of patching or updating Linux kernel systems using md/raid5-ppl is necessary. Security teams and administrators should review the CVE-6-

Why it matters

A use-after-free vulnerability in the Linux kernel's md/raid5-ppl component requires verification of affected systems and prioritized patching or updating.

• Verify Linux kernel versions and configurations to determine exposure
• Assess potential for use-after-free exploitation in md/raid5-ppl component
• Prioritize patching or updating Linux kernel systems using md/raid5-ppl

Technical summary

The loop in ppl_do_flush() continues iterating after calling ppl_io_unit_finished(), leading to a use-after-free. A break statement has been added to stop the loop once io is freed. The vulnerability affects the Linux kernel's md/raid5-ppl component and requires verification of affected systems and prioritized patching or updating. The issue has been resolved with a break statement to stop the loop once io is freed, preventing potential use-after-free exploitation in the md/raid5-ppl component. This vulnerability requires verification from the supplied official sources.

Defensive priority

Linux kernel maintainers and users should assess exposure and prioritize verification of affected systems.

Recommended defensive actions

• Assess exposure of Linux kernel systems using md/raid5-ppl
• Verify if systems are affected by checking Linux kernel versions and configurations
• Apply patches or updates provided by Linux kernel maintainers
• 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 NVD entry provide details on the vulnerability. However, the corpus does not establish versions, exploitation, impact, or remediation, which require verification from the supplied official sources.

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.