{"api_version":"1","generated_at":"2026-05-03T12:43:31+00:00","cve":"CVE-2026-43044","urls":{"html":"https://cve.report/CVE-2026-43044","api":"https://cve.report/api/cve/CVE-2026-43044.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43044","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43044"},"summary":{"title":"crypto: caam - fix DMA corruption on long hmac keys","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: caam - fix DMA corruption on long hmac keys\n\nWhen a key longer than block size is supplied, it is copied and then\nhashed into the real key.  The memory allocated for the copy needs to\nbe rounded to DMA cache alignment, as otherwise the hashed key may\ncorrupt neighbouring memory.\n\nThe rounding was performed, but never actually used for the allocation.\nFix this by replacing kmemdup with kmalloc for a larger buffer,\nfollowed by memcpy.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-01 15:16:50","updated_at":"2026-05-03 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43044","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 199354d7fb6eaa2cc5bb650af0bca624baffee35 a7ecf06d3ee06e9b3322e1e7b003ea5c6f6e135a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 199354d7fb6eaa2cc5bb650af0bca624baffee35 c0c133e0225d87aad326bb90bbce9bdd6fde3cbb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 199354d7fb6eaa2cc5bb650af0bca624baffee35 68feed135a0c7243a9275ae7e6a18260f755f52b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 199354d7fb6eaa2cc5bb650af0bca624baffee35 f2af8be110bde26b3e3354efdfdda97f426306a4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: caam - fix DMA corruption on long hmac keys\n\nWhen a key longer than block size is supplied, it is copied and then\nhashed into the real key.  The memory allocated for the copy needs to\nbe rounded to DMA cache alignment, as otherwise the hashed key may\ncorrupt neighbouring memory.\n\nThe rounding was performed, but never actually used for the allocation.\nFix this by replacing kmemdup with kmalloc for a larger buffer,\nfollowed by memcpy."}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-05-03T05:46:20.984Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/a7ecf06d3ee06e9b3322e1e7b003ea5c6f6e135a"},{"url":"https://git.kernel.org/stable/c/c0c133e0225d87aad326bb90bbce9bdd6fde3cbb"},{"url":"https://git.kernel.org/stable/c/68feed135a0c7243a9275ae7e6a18260f755f52b"},{"url":"https://git.kernel.org/stable/c/f2af8be110bde26b3e3354efdfdda97f426306a4"},{"url":"https://git.kernel.org/stable/c/5ddfdcbe10dc5f97afc4e46ca22be2be717e8caf"}],"title":"crypto: caam - fix DMA corruption on long hmac keys","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43044","datePublished":"2026-05-01T14:15:40.317Z","dateReserved":"2026-05-01T14:12:55.979Z","dateUpdated":"2026-05-03T05:46:20.984Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-01 15:16:50","lastModifiedDate":"2026-05-03 07:16:23","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43044","Ordinal":"1","Title":"crypto: caam - fix DMA corruption on long hmac keys","CVE":"CVE-2026-43044","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43044","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: caam - fix DMA corruption on long hmac keys\n\nWhen a key longer than block size is supplied, it is copied and then\nhashed into the real key.  The memory allocated for the copy needs to\nbe rounded to DMA cache alignment, as otherwise the hashed key may\ncorrupt neighbouring memory.\n\nThe rounding was performed, but never actually used for the allocation.\nFix this by replacing kmemdup with kmalloc for a larger buffer,\nfollowed by memcpy.","Type":"Description","Title":"crypto: caam - fix DMA corruption on long hmac keys"}]}}}