drm/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid()
CVE-2026-68245 · published 10 Aug 2026
How serious is it
- Severity: high, CVSS score 7.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-68245?
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Who is affected
- Linux Linux: b8f67b9ddf4f8fe6dd536590712b5912ad78f99c to < fe16a7e5336ae888751984e30c451fbf7cfa5df7, b8f67b9ddf4f8fe6dd536590712b5912ad78f99c to < 1173190412fb9d12e7efce76734118d9712ff970, b8f67b9ddf4f8fe6dd536590712b5912ad78f99c to < 5d5fb9124a2bba96a7807086d8fe0f7ce810d546, b8f67b9ddf4f8fe6dd536590712b5912ad78f99c to < 04cc4aa3617b0ed67e859f91f09de5d896a46f3a
- Linux Linux: 6.9
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
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- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
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)
Check your whole app
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References
- git.kernel.org/stable/c/fe16a7e5336ae888751984e30c451fbf7cfa5df7
- git.kernel.org/stable/c/1173190412fb9d12e7efce76734118d9712ff970
- git.kernel.org/stable/c/5d5fb9124a2bba96a7807086d8fe0f7ce810d546
- git.kernel.org/stable/c/04cc4aa3617b0ed67e859f91f09de5d896a46f3a
Merged from CVE List. Last updated 25 Oct 2026. All vulnerabilities · RSS · JSON