CVE-2026-52965 Linux CVE debrief

Who should care

Linux kernel users, administrators, and security teams should be aware of this vulnerability and take recommended actions to mitigate potential risks. Affected operators and platforms may be exposed to potential denial of service or privilege escalation attacks.

Technical summary

The drm/ttm module in the Linux kernel was vulnerable to an infinite LRU walk on swapout failure. When ttm_tt_swapout() fails, the current code calls ttm_resource_add_bulk_move() followed by ttm_resource_move_to_lru_tail() to restore the resource's bulk_move membership. However, ttm_resource_move_to_lru_tail() places the resource at the tail of the LRU list, which puts the resource in front of the hitch node. The next list_for_each_entry_continue() from the hitch finds the same resource again, causing an infinite loop. The fix defers del_bulk_move to the success path only, preventing the infinite loop and potential denial of service or privilege escalation attacks.

Defensive priority

Medium

Recommended defensive actions

• Apply the official patch or update the Linux kernel to the latest version
• Review and monitor system logs for potential exploitation attempts
• Implement compensating controls, such as restricting access to the affected system
• 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 was published on 2026-06-24T17:17:06.937Z and last modified on 2026-07-10T19:23:34.427Z. The NVD entry is currently Awaiting Analysis. Linux kernel users should verify their deployments and review official advisories for affected scope and severity.

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.