{"api_version":"1","generated_at":"2026-09-18T02:28:41+00:00","cve":"CVE-2026-90230","urls":{"html":"https://cve.report/CVE-2026-90230","api":"https://cve.report/api/cve/CVE-2026-90230.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-90230","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-90230"},"summary":{"title":"nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()\n\nnvmet_execute_auth_send() allocates the DH-HMAC-CHAP message buffer with\nthe host-supplied transfer length (tl) and hands it to\nnvmet_auth_negotiate() without passing tl along. nvmet_auth_negotiate()\nthen reads the negotiate header and, for each of the halen hash\nidentifiers and dhlen DH group identifiers, indexes into the fixed\nidlist[60] array (hashes at idlist[0..halen), groups at idlist[30..]).\n\nNeither the transfer length nor halen/dhlen is validated. A malicious or\nnon-conformant host can report a tl smaller than the negotiate structure,\nor a halen/dhlen larger than the array (both are u8, up to 255), making\nthe loops read past the end of the allocated buffer (heap out-of-bounds\nread). The sibling nvmet_auth_reply() already validates tl against the\nstructure size; the negotiate path did not.\n\nPass tl into nvmet_auth_negotiate(), reject a tl that does not cover the\nnegotiate data plus one full protocol descriptor, and reject halen/dhlen\nlarger than NVME_AUTH_DHCHAP_MAX_DH_IDS.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:18","updated_at":"2026-09-17 17:17:18"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/aaac783950b17c57df9b6f7344747cacb1a407ed","name":"https://git.kernel.org/stable/c/aaac783950b17c57df9b6f7344747cacb1a407ed","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7b81e4d2230e3d2d372c826180c4ef0efc244f31","name":"https://git.kernel.org/stable/c/7b81e4d2230e3d2d372c826180c4ef0efc244f31","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5bb96cc218835769ab74ec7f3ea2bf81fbffe955","name":"https://git.kernel.org/stable/c/5bb96cc218835769ab74ec7f3ea2bf81fbffe955","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c38a8186326799957d293d370136c128cd113916","name":"https://git.kernel.org/stable/c/c38a8186326799957d293d370136c128cd113916","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/89ff11b72f38976f3b5aea23a5228ee05e277209","name":"https://git.kernel.org/stable/c/89ff11b72f38976f3b5aea23a5228ee05e277209","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90230","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90230","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected db1312dd95488b5e6ff362ff66fcf953a46b1821 89ff11b72f38976f3b5aea23a5228ee05e277209 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected db1312dd95488b5e6ff362ff66fcf953a46b1821 aaac783950b17c57df9b6f7344747cacb1a407ed git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected db1312dd95488b5e6ff362ff66fcf953a46b1821 c38a8186326799957d293d370136c128cd113916 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected db1312dd95488b5e6ff362ff66fcf953a46b1821 7b81e4d2230e3d2d372c826180c4ef0efc244f31 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected db1312dd95488b5e6ff362ff66fcf953a46b1821 5bb96cc218835769ab74ec7f3ea2bf81fbffe955 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.0","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.0 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * 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/nvme/target/fabrics-cmd-auth.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"89ff11b72f38976f3b5aea23a5228ee05e277209","status":"affected","version":"db1312dd95488b5e6ff362ff66fcf953a46b1821","versionType":"git"},{"lessThan":"aaac783950b17c57df9b6f7344747cacb1a407ed","status":"affected","version":"db1312dd95488b5e6ff362ff66fcf953a46b1821","versionType":"git"},{"lessThan":"c38a8186326799957d293d370136c128cd113916","status":"affected","version":"db1312dd95488b5e6ff362ff66fcf953a46b1821","versionType":"git"},{"lessThan":"7b81e4d2230e3d2d372c826180c4ef0efc244f31","status":"affected","version":"db1312dd95488b5e6ff362ff66fcf953a46b1821","versionType":"git"},{"lessThan":"5bb96cc218835769ab74ec7f3ea2bf81fbffe955","status":"affected","version":"db1312dd95488b5e6ff362ff66fcf953a46b1821","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/nvme/target/fabrics-cmd-auth.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.0"},{"lessThan":"6.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()\n\nnvmet_execute_auth_send() allocates the DH-HMAC-CHAP message buffer with\nthe host-supplied transfer length (tl) and hands it to\nnvmet_auth_negotiate() without passing tl along. nvmet_auth_negotiate()\nthen reads the negotiate header and, for each of the halen hash\nidentifiers and dhlen DH group identifiers, indexes into the fixed\nidlist[60] array (hashes at idlist[0..halen), groups at idlist[30..]).\n\nNeither the transfer length nor halen/dhlen is validated. A malicious or\nnon-conformant host can report a tl smaller than the negotiate structure,\nor a halen/dhlen larger than the array (both are u8, up to 255), making\nthe loops read past the end of the allocated buffer (heap out-of-bounds\nread). The sibling nvmet_auth_reply() already validates tl against the\nstructure size; the negotiate path did not.\n\nPass tl into nvmet_auth_negotiate(), reject a tl that does not cover the\nnegotiate data plus one full protocol descriptor, and reject halen/dhlen\nlarger than NVME_AUTH_DHCHAP_MAX_DH_IDS."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:07:37.940Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/89ff11b72f38976f3b5aea23a5228ee05e277209"},{"url":"https://git.kernel.org/stable/c/aaac783950b17c57df9b6f7344747cacb1a407ed"},{"url":"https://git.kernel.org/stable/c/c38a8186326799957d293d370136c128cd113916"},{"url":"https://git.kernel.org/stable/c/7b81e4d2230e3d2d372c826180c4ef0efc244f31"},{"url":"https://git.kernel.org/stable/c/5bb96cc218835769ab74ec7f3ea2bf81fbffe955"}],"title":"nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-90230","datePublished":"2026-09-17T16:07:37.940Z","dateReserved":"2026-09-11T19:38:34.794Z","dateUpdated":"2026-09-17T16:07:37.940Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:18","lastModifiedDate":"2026-09-17 17:17:18","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"90230","Ordinal":"1","Title":"nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()","CVE":"CVE-2026-90230","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"90230","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()\n\nnvmet_execute_auth_send() allocates the DH-HMAC-CHAP message buffer with\nthe host-supplied transfer length (tl) and hands it to\nnvmet_auth_negotiate() without passing tl along. nvmet_auth_negotiate()\nthen reads the negotiate header and, for each of the halen hash\nidentifiers and dhlen DH group identifiers, indexes into the fixed\nidlist[60] array (hashes at idlist[0..halen), groups at idlist[30..]).\n\nNeither the transfer length nor halen/dhlen is validated. A malicious or\nnon-conformant host can report a tl smaller than the negotiate structure,\nor a halen/dhlen larger than the array (both are u8, up to 255), making\nthe loops read past the end of the allocated buffer (heap out-of-bounds\nread). The sibling nvmet_auth_reply() already validates tl against the\nstructure size; the negotiate path did not.\n\nPass tl into nvmet_auth_negotiate(), reject a tl that does not cover the\nnegotiate data plus one full protocol descriptor, and reject halen/dhlen\nlarger than NVME_AUTH_DHCHAP_MAX_DH_IDS.","Type":"Description","Title":"nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()"}]}}}