{"api_version":"1","generated_at":"2026-05-03T12:42:28+00:00","cve":"CVE-2026-43055","urls":{"html":"https://cve.report/CVE-2026-43055","api":"https://cve.report/api/cve/CVE-2026-43055.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43055","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43055"},"summary":{"title":"scsi: target: file: Use kzalloc_flex for aio_cmd","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: file: Use kzalloc_flex for aio_cmd\n\nThe target_core_file doesn't initialize the aio_cmd->iocb for the\nki_write_stream. When a write command fd_execute_rw_aio() is executed,\nwe may get a bogus ki_write_stream value, causing unintended write\nfailure status when checking iocb->ki_write_stream > max_write_streams\nin the block device.\n\nLet's just use kzalloc_flex when allocating the aio_cmd and let\nki_write_stream=0 to fix this issue.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-01 15:16:52","updated_at":"2026-05-03 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43055","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 ce54802fe6bb78eb0feffc66fed6a45d41ffc3ab git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 4eaff1728d0e69b95933412241bbccf4f797dba8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 01f784fc9d0ab2a6dac45ee443620e517cb2a19b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.16","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.16 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the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: file: Use kzalloc_flex for aio_cmd\n\nThe target_core_file doesn't initialize the aio_cmd->iocb for the\nki_write_stream. When a write command fd_execute_rw_aio() is executed,\nwe may get a bogus ki_write_stream value, causing unintended write\nfailure status when checking iocb->ki_write_stream > max_write_streams\nin the block device.\n\nLet's just use kzalloc_flex when allocating the aio_cmd and let\nki_write_stream=0 to fix this issue."}],"metrics":[{"cvssV3_1":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-05-03T05:46:25.662Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/ce54802fe6bb78eb0feffc66fed6a45d41ffc3ab"},{"url":"https://git.kernel.org/stable/c/4eaff1728d0e69b95933412241bbccf4f797dba8"},{"url":"https://git.kernel.org/stable/c/01f784fc9d0ab2a6dac45ee443620e517cb2a19b"}],"title":"scsi: target: file: Use kzalloc_flex for aio_cmd","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43055","datePublished":"2026-05-01T14:15:48.139Z","dateReserved":"2026-05-01T14:12:55.980Z","dateUpdated":"2026-05-03T05:46:25.662Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-01 15:16:52","lastModifiedDate":"2026-05-03 07:16:24","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43055","Ordinal":"1","Title":"scsi: target: file: Use kzalloc_flex for aio_cmd","CVE":"CVE-2026-43055","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43055","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: file: Use kzalloc_flex for aio_cmd\n\nThe target_core_file doesn't initialize the aio_cmd->iocb for the\nki_write_stream. When a write command fd_execute_rw_aio() is executed,\nwe may get a bogus ki_write_stream value, causing unintended write\nfailure status when checking iocb->ki_write_stream > max_write_streams\nin the block device.\n\nLet's just use kzalloc_flex when allocating the aio_cmd and let\nki_write_stream=0 to fix this issue.","Type":"Description","Title":"scsi: target: file: Use kzalloc_flex for aio_cmd"}]}}}