{"id":"CVE-2026-31566","revision":"b45ddce8ceac407e8eab14fe748f44cf","records":[{"revision":"b45ddce8ceac407e8eab14fe748f44cf","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-31566","aliases":[],"title":"drm/amdgpu: Fix fence put before wait in amdgpu_amdkfd_submit_ib","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Fix fence put before wait in amdgpu_amdkfd_submit_ib\n\namdgpu_amdkfd_submit_ib() submits a GPU job and gets a fence\nfrom amdgpu_ib_schedule(). This fence is used to wait for job\ncompletion.\n\nCurrently, the code drops the fence reference using dma_fence_put()\nbefore calling dma_fence_wait().\n\nIf dma_fence_put() releases the last reference, the fence may be\nfreed before dma_fence_wait() is called. This can lead to a\nuse-after-free.\n\nFix this by waiting on the fence first and releasing the reference\nonly after dma_fence_wait() completes.\n\nFixes the below:\ndrivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c:697 amdgpu_amdkfd_submit_ib() warn: passing freed memory 'f' (line 696)\n\n(cherry picked from commit 8b9e5259adc385b61a6590a13b82ae0ac2bd3482)","state":0,"publishedAt":"2026-04-24T14:35:46.74+00:00","modifiedAt":"2026-10-19T18:55:59.13+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"9ae55f030dc523fc4dc6069557e4a887ea815453\",\n                            \"lessThan\": \"bc7760c107dc08ef3e231d72c492e67b0a86848b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9ae55f030dc523fc4dc6069557e4a887ea815453\",\n                            \"lessThan\": \"e23602eb0779760544314ed3905fa6a89a4e4070\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9ae55f030dc523fc4dc6069557e4a887ea815453\",\n                            \"lessThan\": \"138e42be35ff2ce6572ae744de851ea286cf3c69\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9ae55f030dc523fc4dc6069557e4a887ea815453\",\n                            \"lessThan\": \"39820864eacd886f1a6f817414fb8f9ea3e9a2b4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9ae55f030dc523fc4dc6069557e4a887ea815453\",\n                            \"lessThan\": \"42d248726a0837640452b71c5a202ca3d35239ec\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9ae55f030dc523fc4dc6069557e4a887ea815453\",\n                            \"lessThan\": \"7150850146ebfa4ca998f653f264b8df6f7f85be\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.168\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.131\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.80\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.21\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19.11\",\n                            \"lessThanOrEqual\": \"6.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/bc7760c107dc08ef3e231d72c492e67b0a86848b","https://git.kernel.org/stable/c/e23602eb0779760544314ed3905fa6a89a4e4070","https://git.kernel.org/stable/c/138e42be35ff2ce6572ae744de851ea286cf3c69","https://git.kernel.org/stable/c/39820864eacd886f1a6f817414fb8f9ea3e9a2b4","https://git.kernel.org/stable/c/42d248726a0837640452b71c5a202ca3d35239ec","https://git.kernel.org/stable/c/7150850146ebfa4ca998f653f264b8df6f7f85be"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-31566","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-31566","identifiers":["CVE-2026-31566"]},"retained":false,"historicalAffected":[]}],"coverage":[]}