{"id":"CVE-2025-21940","state":"PUBLISHED","title":"drm/amdkfd: Fix NULL Pointer Dereference in KFD queue","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix NULL Pointer Dereference in KFD queue\n\nThrough KFD IOCTL Fuzzing we encountered a NULL pointer derefrence\nwhen calling kfd_queue_acquire_buffers.\n\n(cherry picked from commit 049e5bf3c8406f87c3d8e1958e0a16804fa1d530)","publishedAt":"2025-04-01T15:41:05.977Z","updatedAt":"2026-05-11T21:09:28.926Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"629568d25fea8ece4f65073f039aeef4e240ab67","status":"affected","lessThan":"c3cbeafb4e0001d9146df50b470885e02664f3c7","versionType":"git"},{"version":"629568d25fea8ece4f65073f039aeef4e240ab67","status":"affected","lessThan":"33eb8041c5d6c19d46e7bfd23a031844336afd80","versionType":"git"},{"version":"629568d25fea8ece4f65073f039aeef4e240ab67","status":"affected","lessThan":"fd617ea3b79d2116d53f76cdb5a3601c0ba6e42f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdkfd/kfd_queue.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.12","versionType":"semver"},{"version":"6.12.19","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13.7","status":"unaffected","lessThanOrEqual":"6.13.*","versionType":"semver"},{"version":"6.14","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/amdkfd/kfd_queue.c"]}],"references":["https://git.kernel.org/stable/c/c3cbeafb4e0001d9146df50b470885e02664f3c7","https://git.kernel.org/stable/c/33eb8041c5d6c19d46e7bfd23a031844336afd80","https://git.kernel.org/stable/c/fd617ea3b79d2116d53f76cdb5a3601c0ba6e42f"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:08:39.238Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/21xxx/CVE-2025-21940.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-21940","state":"PUBLISHED","datePublished":"2025-04-01T15:41:05.977Z","dateUpdated":"2026-05-11T21:09:28.926Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-12-29T08:45:45.789Z"},"containers":{"cna":{"title":"drm/amdkfd: Fix NULL Pointer Dereference in KFD queue","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix NULL Pointer Dereference in KFD queue\n\nThrough KFD IOCTL Fuzzing we encountered a NULL pointer derefrence\nwhen calling kfd_queue_acquire_buffers.\n\n(cherry picked from commit 049e5bf3c8406f87c3d8e1958e0a16804fa1d530)"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"629568d25fea8ece4f65073f039aeef4e240ab67","status":"affected","lessThan":"c3cbeafb4e0001d9146df50b470885e02664f3c7","versionType":"git"},{"version":"629568d25fea8ece4f65073f039aeef4e240ab67","status":"affected","lessThan":"33eb8041c5d6c19d46e7bfd23a031844336afd80","versionType":"git"},{"version":"629568d25fea8ece4f65073f039aeef4e240ab67","status":"affected","lessThan":"fd617ea3b79d2116d53f76cdb5a3601c0ba6e42f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdkfd/kfd_queue.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.12","versionType":"semver"},{"version":"6.12.19","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13.7","status":"unaffected","lessThanOrEqual":"6.13.*","versionType":"semver"},{"version":"6.14","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/amdkfd/kfd_queue.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c3cbeafb4e0001d9146df50b470885e02664f3c7"},{"url":"https://git.kernel.org/stable/c/33eb8041c5d6c19d46e7bfd23a031844336afd80"},{"url":"https://git.kernel.org/stable/c/fd617ea3b79d2116d53f76cdb5a3601c0ba6e42f"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:09:28.926Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12","versionEndExcluding":"6.12.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12","versionEndExcluding":"6.13.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12","versionEndExcluding":"6.14"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2025-21940","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:22:08.810729Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","lang":"en","type":"CWE","description":"CWE-476 NULL Pointer Dereference"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T19:26:32.688Z"}}]}}}