Description
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)
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= b8f67b9ddf4f8fe6dd536590712b5912ad78f99c, < fe16a7e5336ae888751984e30c451fbf7cfa5df7; >= b8f67b9ddf4f8fe6dd536590712b5912ad78f99c, < 1173190412fb9d12e7efce76734118d9712ff970; >= b8f67b9ddf4f8fe6dd536590712b5912ad78f99c, < 5d5fb9124a2bba96a7807086d8fe0f7ce810d546; >= b8f67b9ddf4f8fe6dd536590712b5912ad78f99c, < 04cc4aa3617b0ed67e859f91f09de5d896a46f3a; 251840f22eff35c25de531a3fcb523df94c128c0; >= 6.6.160, < 6.7 |
| Linux | Linux | 6.9 |
References
Timeline
- Published
- Aug 10, 2026
- Last modified
- Oct 21, 2026
- NVD status
- Received