{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-47142","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-03-04T18:12:48.842Z","datePublished":"2024-03-25T09:07:40.374Z","dateUpdated":"2025-09-16T08:01:53.491Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-09-16T08:01:53.491Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Fix a use-after-free\n\nlooks like we forget to set ttm->sg to NULL.\nHit panic below\n\n[ 1235.844104] general protection fault, probably for non-canonical address 0x6b6b6b6b6b6b7b4b: 0000 [#1] SMP DEBUG_PAGEALLOC NOPTI\n[ 1235.989074] Call Trace:\n[ 1235.991751]  sg_free_table+0x17/0x20\n[ 1235.995667]  amdgpu_ttm_backend_unbind.cold+0x4d/0xf7 [amdgpu]\n[ 1236.002288]  amdgpu_ttm_backend_destroy+0x29/0x130 [amdgpu]\n[ 1236.008464]  ttm_tt_destroy+0x1e/0x30 [ttm]\n[ 1236.013066]  ttm_bo_cleanup_memtype_use+0x51/0xa0 [ttm]\n[ 1236.018783]  ttm_bo_release+0x262/0xa50 [ttm]\n[ 1236.023547]  ttm_bo_put+0x82/0xd0 [ttm]\n[ 1236.027766]  amdgpu_bo_unref+0x26/0x50 [amdgpu]\n[ 1236.032809]  amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu+0x7aa/0xd90 [amdgpu]\n[ 1236.040400]  kfd_ioctl_alloc_memory_of_gpu+0xe2/0x330 [amdgpu]\n[ 1236.046912]  kfd_ioctl+0x463/0x690 [amdgpu]"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c"],"versions":[{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","lessThan":"0707c3fea8102d211631ba515ef2159707561b0d","status":"affected","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","lessThan":"3293cf3513d69f00c14d43e2020826d45ea0e46a","status":"affected","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","lessThan":"952ab3f9f48eb0e8050596d41951cf516be6b122","status":"affected","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","lessThan":"a849e218556f932576c0fb1c5a88714b61709a17","status":"affected","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","lessThan":"7398c2aab4da960761ec182d04d6d5abbb4a226e","status":"affected","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","lessThan":"f98cdf084405333ee2f5be548a91b2d168e49276","status":"affected","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","lessThan":"d4ea141fd4b40636a8326df5a377d9c5cf9b3faa","status":"affected","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","lessThan":"1e5c37385097c35911b0f8a0c67ffd10ee1af9a2","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c"],"versions":[{"version":"4.2","status":"affected"},{"version":"0","lessThan":"4.2","status":"unaffected","versionType":"semver"},{"version":"4.4.271","lessThanOrEqual":"4.4.*","status":"unaffected","versionType":"semver"},{"version":"4.9.271","lessThanOrEqual":"4.9.*","status":"unaffected","versionType":"semver"},{"version":"4.14.235","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.193","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.124","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.42","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.12.9","lessThanOrEqual":"5.12.*","status":"unaffected","versionType":"semver"},{"version":"5.13","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"4.4.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"4.9.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"4.14.235"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"4.19.193"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.4.124"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.10.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.12.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.13"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0707c3fea8102d211631ba515ef2159707561b0d"},{"url":"https://git.kernel.org/stable/c/3293cf3513d69f00c14d43e2020826d45ea0e46a"},{"url":"https://git.kernel.org/stable/c/952ab3f9f48eb0e8050596d41951cf516be6b122"},{"url":"https://git.kernel.org/stable/c/a849e218556f932576c0fb1c5a88714b61709a17"},{"url":"https://git.kernel.org/stable/c/7398c2aab4da960761ec182d04d6d5abbb4a226e"},{"url":"https://git.kernel.org/stable/c/f98cdf084405333ee2f5be548a91b2d168e49276"},{"url":"https://git.kernel.org/stable/c/d4ea141fd4b40636a8326df5a377d9c5cf9b3faa"},{"url":"https://git.kernel.org/stable/c/1e5c37385097c35911b0f8a0c67ffd10ee1af9a2"}],"title":"drm/amdgpu: 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