CVE-2025-71083: drm/ttm: Avoid NULL pointer deref for evicted BOs
drm/ttm: Avoid NULL pointer deref for evicted BOs
Affected Software
Remediation
Event History
Frequently Asked Questions
Who can trigger this issue?
The CVSS vector indicates local access and low privileges are required, with no user interaction. The issue occurs when devcoredump reads buffer objects, including buffer objects that have been evicted and no longer have an associated resource.
What is the impact of successful exploitation?
Successful triggering can cause a null pointer dereference and affect availability. The provided severity vector indicates no confidentiality or integrity impact.
How can I mitigate the issue if I cannot patch immediately?
No workaround or configuration mitigation is provided. Applying the available patch is the documented remediation.
How can I tell whether a crash is related to this vulnerability?
The relevant condition is a devcoredump attempting to read an evicted buffer object that lacks an associated resource. The fixed behavior records ENODATA for that buffer object rather than attempting to dump its contents.