{"id":"CVE-2021-47420","state":"PUBLISHED","title":"drm/amdkfd: fix a potential ttm->sg memory leak","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: fix a potential ttm->sg memory leak\n\nMemory is allocated for ttm->sg by kmalloc in kfd_mem_dmamap_userptr,\nbut isn't freed by kfree in kfd_mem_dmaunmap_userptr. Free it!","publishedAt":"2024-05-21T15:04:08.635Z","updatedAt":"2026-05-11T13:54:21.579Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"264fb4d332f5e76743818480e482464437837c52","status":"affected","lessThan":"7e5ce6029b627efb4a004746cfdc1eeff850e6eb","versionType":"git"},{"version":"264fb4d332f5e76743818480e482464437837c52","status":"affected","lessThan":"b072ef1215aca33186e3a10109e872e528a9e516","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"5.14.12","status":"unaffected","lessThanOrEqual":"5.14.*","versionType":"semver"},{"version":"5.15","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c"]}],"references":["https://git.kernel.org/stable/c/7e5ce6029b627efb4a004746cfdc1eeff850e6eb","https://git.kernel.org/stable/c/b072ef1215aca33186e3a10109e872e528a9e516"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:19.404Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/47xxx/CVE-2021-47420.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47420","state":"PUBLISHED","datePublished":"2024-05-21T15:04:08.635Z","dateUpdated":"2026-05-11T13:54:21.579Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-05-21T14:58:30.820Z"},"containers":{"cna":{"title":"drm/amdkfd: fix a potential ttm->sg memory leak","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: fix a potential ttm->sg memory leak\n\nMemory is allocated for ttm->sg by kmalloc in kfd_mem_dmamap_userptr,\nbut isn't freed by kfree in kfd_mem_dmaunmap_userptr. Free it!"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"264fb4d332f5e76743818480e482464437837c52","status":"affected","lessThan":"7e5ce6029b627efb4a004746cfdc1eeff850e6eb","versionType":"git"},{"version":"264fb4d332f5e76743818480e482464437837c52","status":"affected","lessThan":"b072ef1215aca33186e3a10109e872e528a9e516","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"5.14.12","status":"unaffected","lessThanOrEqual":"5.14.*","versionType":"semver"},{"version":"5.15","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/7e5ce6029b627efb4a004746cfdc1eeff850e6eb"},{"url":"https://git.kernel.org/stable/c/b072ef1215aca33186e3a10109e872e528a9e516"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T13:54:21.579Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.14.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.15"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-06-11T17:26:39.842792Z","id":"CVE-2021-47420","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-06-11T17:26:55.110Z"}},{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/7e5ce6029b627efb4a004746cfdc1eeff850e6eb","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/b072ef1215aca33186e3a10109e872e528a9e516","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T05:39:59.450Z"}}]}}}