{"api_version":"1","generated_at":"2026-08-22T19:26:21+00:00","cve":"CVE-2026-74703","urls":{"html":"https://cve.report/CVE-2026-74703","api":"https://cve.report/api/cve/CVE-2026-74703.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74703","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74703"},"summary":{"title":"vhost-scsi: Validate T10 PI scatterlist counts","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvhost-scsi: Validate T10 PI scatterlist counts\n\nWhen T10 PI is negotiated, vhost-scsi splits protection bytes from\nthe data iterator before mapping the request scatterlists. A malformed\nrequest can claim protection bytes that cover or exceed the full payload\nlength. The former leaves no data bytes to map, while the latter\nunderflows exp_data_len before advancing the iterator. Both cases can let\na zero data SGL count reach sg_alloc_table_chained(), which triggers\nBUG_ON(!nents).\n\nReject protection lengths that cover or exceed the payload before\nsubtracting prot_bytes and advancing the iterator. Also propagate\nnegative errors from the protection SGL calculation before calling the\nallocator, matching the data SGL path.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-22 16:16:44","updated_at":"2026-08-22 16:16:44"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/2417a498cf3fe64d06faf87e236eda98dd4f04e0","name":"https://git.kernel.org/stable/c/2417a498cf3fe64d06faf87e236eda98dd4f04e0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d876c493fc4b811941bfeb4c80beb2dfc4bf025e","name":"https://git.kernel.org/stable/c/d876c493fc4b811941bfeb4c80beb2dfc4bf025e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f8fe3f8d342da750dd10361bf66009fd3072926b","name":"https://git.kernel.org/stable/c/f8fe3f8d342da750dd10361bf66009fd3072926b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74703","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74703","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bca939d5bcd00d6faea99c47eafd60bed573ef03 2417a498cf3fe64d06faf87e236eda98dd4f04e0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bca939d5bcd00d6faea99c47eafd60bed573ef03 f8fe3f8d342da750dd10361bf66009fd3072926b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bca939d5bcd00d6faea99c47eafd60bed573ef03 d876c493fc4b811941bfeb4c80beb2dfc4bf025e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.45 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.9 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/vhost/scsi.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2417a498cf3fe64d06faf87e236eda98dd4f04e0","status":"affected","version":"bca939d5bcd00d6faea99c47eafd60bed573ef03","versionType":"git"},{"lessThan":"f8fe3f8d342da750dd10361bf66009fd3072926b","status":"affected","version":"bca939d5bcd00d6faea99c47eafd60bed573ef03","versionType":"git"},{"lessThan":"d876c493fc4b811941bfeb4c80beb2dfc4bf025e","status":"affected","version":"bca939d5bcd00d6faea99c47eafd60bed573ef03","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/vhost/scsi.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.15"},{"lessThan":"6.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.45","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.45","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.9","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvhost-scsi: Validate T10 PI scatterlist counts\n\nWhen T10 PI is negotiated, vhost-scsi splits protection bytes from\nthe data iterator before mapping the request scatterlists. A malformed\nrequest can claim protection bytes that cover or exceed the full payload\nlength. The former leaves no data bytes to map, while the latter\nunderflows exp_data_len before advancing the iterator. Both cases can let\na zero data SGL count reach sg_alloc_table_chained(), which triggers\nBUG_ON(!nents).\n\nReject protection lengths that cover or exceed the payload before\nsubtracting prot_bytes and advancing the iterator. Also propagate\nnegative errors from the protection SGL calculation before calling the\nallocator, matching the data SGL path."}],"providerMetadata":{"dateUpdated":"2026-08-22T15:33:02.872Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/2417a498cf3fe64d06faf87e236eda98dd4f04e0"},{"url":"https://git.kernel.org/stable/c/f8fe3f8d342da750dd10361bf66009fd3072926b"},{"url":"https://git.kernel.org/stable/c/d876c493fc4b811941bfeb4c80beb2dfc4bf025e"}],"title":"vhost-scsi: Validate T10 PI scatterlist counts","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74703","datePublished":"2026-08-22T15:33:02.872Z","dateReserved":"2026-08-15T05:44:03.927Z","dateUpdated":"2026-08-22T15:33:02.872Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-22 16:16:44","lastModifiedDate":"2026-08-22 16:16:44","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74703","Ordinal":"1","Title":"vhost-scsi: Validate T10 PI scatterlist counts","CVE":"CVE-2026-74703","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74703","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nvhost-scsi: Validate T10 PI scatterlist counts\n\nWhen T10 PI is negotiated, vhost-scsi splits protection bytes from\nthe data iterator before mapping the request scatterlists. A malformed\nrequest can claim protection bytes that cover or exceed the full payload\nlength. The former leaves no data bytes to map, while the latter\nunderflows exp_data_len before advancing the iterator. Both cases can let\na zero data SGL count reach sg_alloc_table_chained(), which triggers\nBUG_ON(!nents).\n\nReject protection lengths that cover or exceed the payload before\nsubtracting prot_bytes and advancing the iterator. Also propagate\nnegative errors from the protection SGL calculation before calling the\nallocator, matching the data SGL path.","Type":"Description","Title":"vhost-scsi: Validate T10 PI scatterlist counts"}]}}}