CVE-2026-68380: accel/amdxdna: Fix use-after-free of mm_struct in job scheduler
In the Linux kernel, the following vulnerability has been resolved:
accel/amdxdna: Fix use-after-free of mmstruct in job scheduler
amdxdnacmdsubmit() stores current->mm in job->mm without holding any reference. aie2schedjobrun() later access job->mm from the DRM scheduler worker thread. With only a raw pointer and no structural reference, the mmstruct can be freed before the scheduler runs the job.
Fix this by calling mmgrab() to hold a structural mmcount reference for the lifetime of the job, paired with mmdrop() in every cleanup path.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-68380?
The severity of CVE-2026-68380 is rated at 43.
What does CVE-2026-68380 impact?
CVE-2026-68380 impacts the Linux kernel's job scheduling when using AMD's DXNA.
How do I fix CVE-2026-68380?
To fix CVE-2026-68380, update the Linux kernel to a version that incorporates the patch resolving the use-after-free issue.
What is the nature of the vulnerability in CVE-2026-68380?
CVE-2026-68380 is a use-after-free vulnerability related to the handling of mm_struct in the job scheduler.
When was CVE-2026-68380 published?
CVE-2026-68380 was published on August 10, 2026.