CVE-2025-38436: drm/scheduler: signal scheduled fence when kill job

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-25 · updated 2026-06-17
Weakness: CWE-667

Description

In the Linux kernel, the following vulnerability has been resolved: drm/scheduler: signal scheduled fence when kill job When an entity from application B is killed, drm_sched_entity_kill() removes all jobs belonging to that entity through drm_sched_entity_kill_jobs_work(). If application A's job depends on a scheduled fence from application B's job, and that fence is not properly signaled during the killing process, application A's dependency cannot be cleared. This leads to application A hanging indefinitely while waiting for a dependency that will never be resolved. Fix this issue by ensuring that scheduled fences are properly signaled when an entity is killed, allowing dependent applications to continue execution.

Affected products

Linux kernel: from 4.3 before 6.6.96; from 6.7 before 6.12.36; from 6.13 before 6.15.5 — fixed in 6.12.36, 6.15.5, 6.6.96

How to fix

Upgrade to a fixed version: Linux kernel 6.12.36, 6.15.5, 6.6.96. Check the vendor advisory for mitigations.

References

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