{"api_version":"1","generated_at":"2026-06-10T13:41:16+00:00","cve":"CVE-2026-43398","urls":{"html":"https://cve.report/CVE-2026-43398","api":"https://cve.report/api/cve/CVE-2026-43398.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43398","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43398"},"summary":{"title":"drm/amdgpu: add upper bound check on user inputs in wait ioctl","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: add upper bound check on user inputs in wait ioctl\n\nHuge input values in amdgpu_userq_wait_ioctl can lead to a OOM and\ncould be exploited.\n\nSo check these input value against AMDGPU_USERQ_MAX_HANDLES\nwhich is big enough value for genuine use cases and could\npotentially avoid OOM.\n\nv2: squash in Srini's fix\n\n(cherry picked from commit fcec012c664247531aed3e662f4280ff804d1476)","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-08 15:16:51","updated_at":"2026-05-21 19:29:27"},"problem_types":["NVD-CWE-noinfo"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://git.kernel.org/stable/c/64ac7c09fc44985ec9bb6a9db740899fa40ca613","name":"https://git.kernel.org/stable/c/64ac7c09fc44985ec9bb6a9db740899fa40ca613","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b1d10508da559da2e0ca9cca6505094a7df948e1","name":"https://git.kernel.org/stable/c/b1d10508da559da2e0ca9cca6505094a7df948e1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3cd93bc695b3456f26f5ed52753d9071da26202a","name":"https://git.kernel.org/stable/c/3cd93bc695b3456f26f5ed52753d9071da26202a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43398","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43398","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a292fdecd72834b3bec380baa5db1e69e7f70679 b1d10508da559da2e0ca9cca6505094a7df948e1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a292fdecd72834b3bec380baa5db1e69e7f70679 3cd93bc695b3456f26f5ed52753d9071da26202a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a292fdecd72834b3bec380baa5db1e69e7f70679 64ac7c09fc44985ec9bb6a9db740899fa40ca613 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.16","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.19 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.9 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2026","cve_id":"43398","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"43398","cve":"CVE-2026-43398","epss":"0.000170000","percentile":"0.041320000","score_date":"2026-05-12","updated_at":"2026-05-13 00:11:53"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"b1d10508da559da2e0ca9cca6505094a7df948e1","status":"affected","version":"a292fdecd72834b3bec380baa5db1e69e7f70679","versionType":"git"},{"lessThan":"3cd93bc695b3456f26f5ed52753d9071da26202a","status":"affected","version":"a292fdecd72834b3bec380baa5db1e69e7f70679","versionType":"git"},{"lessThan":"64ac7c09fc44985ec9bb6a9db740899fa40ca613","status":"affected","version":"a292fdecd72834b3bec380baa5db1e69e7f70679","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.19","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.19","versionStartIncluding":"6.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.9","versionStartIncluding":"6.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"6.16","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: add upper bound check on user inputs in wait ioctl\n\nHuge input values in amdgpu_userq_wait_ioctl can lead to a OOM and\ncould be exploited.\n\nSo check these input value against AMDGPU_USERQ_MAX_HANDLES\nwhich is big enough value for genuine use cases and could\npotentially avoid OOM.\n\nv2: squash in Srini's fix\n\n(cherry picked from commit fcec012c664247531aed3e662f4280ff804d1476)"}],"providerMetadata":{"dateUpdated":"2026-05-11T22:23:48.775Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/b1d10508da559da2e0ca9cca6505094a7df948e1"},{"url":"https://git.kernel.org/stable/c/3cd93bc695b3456f26f5ed52753d9071da26202a"},{"url":"https://git.kernel.org/stable/c/64ac7c09fc44985ec9bb6a9db740899fa40ca613"}],"title":"drm/amdgpu: add upper bound check on user inputs in wait ioctl","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43398","datePublished":"2026-05-08T14:21:40.895Z","dateReserved":"2026-05-01T14:12:56.007Z","dateUpdated":"2026-05-11T22:23:48.775Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-08 15:16:51","lastModifiedDate":"2026-05-21 19:29:27","problem_types":["NVD-CWE-noinfo"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"6.18.19","matchCriteriaId":"F7766422-FDBE-437C-8710-C7F7094B8844"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"6.19.9","matchCriteriaId":"E825E7C3-FEAC-4FD3-8A81-78D7387948C9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*","matchCriteriaId":"F253B622-8837-4245-BCE5-A7BF8FC76A16"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43398","Ordinal":"1","Title":"drm/amdgpu: add upper bound check on user inputs in wait ioctl","CVE":"CVE-2026-43398","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43398","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: add upper bound check on user inputs in wait ioctl\n\nHuge input values in amdgpu_userq_wait_ioctl can lead to a OOM and\ncould be exploited.\n\nSo check these input value against AMDGPU_USERQ_MAX_HANDLES\nwhich is big enough value for genuine use cases and could\npotentially avoid OOM.\n\nv2: squash in Srini's fix\n\n(cherry picked from commit fcec012c664247531aed3e662f4280ff804d1476)","Type":"Description","Title":"drm/amdgpu: add upper bound check on user inputs in wait ioctl"}]}}}