In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: Fix fence put before wait in amdgpu_amdkfd_submit_ib
amdgpu_amdkfd_submit_ib() submits a GPU job and gets a fence
from amdgpu_ib_schedule(). This fence is used to wait for job
completion.
Currently, the code drops the fence reference using dma_fence_put()
before calling dma_fence_wait().
If dma_fence_put() releases the last reference, the fence may be
freed before dma_fence_wait() is called. This can lead to a
use-after-free.
Fix this by waiting on the fence first and releasing the reference
only after dma_fence_wait() completes.
Fixes the below:
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c:697 amdgpu_amdkfd_submit_ib() warn: passing freed memory 'f' (line 696)
(cherry picked from commit 8b9e5259adc385b61a6590a13b82ae0ac2bd3482)
References
Configurations
Configuration 1 (hide)
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History
27 Apr 2026, 20:32
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/138e42be35ff2ce6572ae744de851ea286cf3c69 - Patch | |
| References | () https://git.kernel.org/stable/c/39820864eacd886f1a6f817414fb8f9ea3e9a2b4 - Patch | |
| References | () https://git.kernel.org/stable/c/42d248726a0837640452b71c5a202ca3d35239ec - Patch | |
| References | () https://git.kernel.org/stable/c/7150850146ebfa4ca998f653f264b8df6f7f85be - Patch | |
| References | () https://git.kernel.org/stable/c/bc7760c107dc08ef3e231d72c492e67b0a86848b - Patch | |
| References | () https://git.kernel.org/stable/c/e23602eb0779760544314ed3905fa6a89a4e4070 - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.0:-:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* |
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| CWE | CWE-416 | |
| First Time |
Linux
Linux linux Kernel |
27 Apr 2026, 15:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
24 Apr 2026, 15:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-24 15:16
Updated : 2026-04-27 20:32
NVD link : CVE-2026-31566
Mitre link : CVE-2026-31566
CVE.ORG link : CVE-2026-31566
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free