Description
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)
Product status
9ae55f030dc523fc4dc6069557e4a887ea815453 (git) before bc7760c107dc08ef3e231d72c492e67b0a86848b
9ae55f030dc523fc4dc6069557e4a887ea815453 (git) before e23602eb0779760544314ed3905fa6a89a4e4070
9ae55f030dc523fc4dc6069557e4a887ea815453 (git) before 138e42be35ff2ce6572ae744de851ea286cf3c69
9ae55f030dc523fc4dc6069557e4a887ea815453 (git) before 39820864eacd886f1a6f817414fb8f9ea3e9a2b4
9ae55f030dc523fc4dc6069557e4a887ea815453 (git) before 42d248726a0837640452b71c5a202ca3d35239ec
9ae55f030dc523fc4dc6069557e4a887ea815453 (git) before 7150850146ebfa4ca998f653f264b8df6f7f85be
6.0
Any version before 6.0
6.1.168 (semver)
6.6.131 (semver)
6.12.80 (semver)
6.18.21 (semver)
6.19.11 (semver)
7.0 (original_commit_for_fix)
References
git.kernel.org/...c/bc7760c107dc08ef3e231d72c492e67b0a86848b
git.kernel.org/...c/e23602eb0779760544314ed3905fa6a89a4e4070
git.kernel.org/...c/138e42be35ff2ce6572ae744de851ea286cf3c69
git.kernel.org/...c/39820864eacd886f1a6f817414fb8f9ea3e9a2b4
git.kernel.org/...c/42d248726a0837640452b71c5a202ca3d35239ec
git.kernel.org/...c/7150850146ebfa4ca998f653f264b8df6f7f85be