CVE-2026-68245
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk6th percentile - higher than 6% of all known CVEs
Summary
In the Linux kernel, the drm/amdgpu driver had a lifetime issue with the vm pointer in amdgpu_vm_get_task_info_pasid(). The pointer was used after the lock was released, potentially leading to use-after-unlock. The fix removes the amdgpu_vm_get_vm_from_pasid() function and inlines the code to hold the lock while in use.
Risk Assessment
Use-after-unlock can lead to invalid memory access, potentially causing system crashes or exploitation.
Recommendation
It is recommended to update the Linux kernel to a version containing the fix that eliminates the pointer lifetime issue.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid() The vm pointer returned from amdgpu_vm_get_vm_from_pasid() is only valid while the lock is still being held. Once xa_unlock_irqrestore is called and returned, the pointer is no longer under lock and is subject to modification. Since, the caller still dereferences vm->task_info in amdgpu_vm_get_task_info_vm() after the lock is removed, this causes a use after unlock problem. Remove the lifetime issue present in amdgpu_vm_get_task_info_pasid() through removing the amdgpu_vm_get_vm_from_pasid() function from amdgpu_vm.c and making the relevant code inline to hold the lock while it is still in use. (cherry picked from commit 9d01579f3f868b333acc901815972685989092c7)