{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-99273", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.405Z", "datePublished": "2026-11-07T14:08:45.585Z", "dateUpdated": "2026-11-07T14:08:45.585Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-11-07T14:08:45.585Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: reserve space for the UTF-16 terminator in stream info\n\nsmb_strtoUTF16() always writes a terminating zero UTF-16 unit after the\nconverted characters, but get_file_stream_info() budgets only\nsizeof(struct smb2_file_stream_info) + streamlen * 2 for a stream entry\nand sizeof(struct smb2_file_stream_info) + 7 * 2 for the trailing\n\"::$DATA\" entry. When an entry exactly fills the 448-byte small response\nbuffer, the terminator is written two bytes past the allocation.\n\nReserve one extra UTF-16 unit in both budget checks. The terminator is\nnot part of the wire format, so the reported lengths are unchanged."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/server/smb2pdu.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "06a751809ebd33e95b05bf733697318a17a4872b", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "0e64f89563164719ceb1aa33f2a8bfd6391fa340", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a025c4991a7d83edc4dd339e3ea86d8ff6226eca", "status": "affected", "versionType": "git"}, {"version": "0", "lessThan": "6.18.61", "status": "affected", "versionType": "semver"}, {"version": "0", "lessThan": "7.3.2", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/server/smb2pdu.c"], "versions": [{"version": "6.18.61", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3.2", "lessThanOrEqual": "7.3.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.4-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.18.61"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "7.3.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "7.4-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/06a751809ebd33e95b05bf733697318a17a4872b"}, {"url": "https://git.kernel.org/stable/c/0e64f89563164719ceb1aa33f2a8bfd6391fa340"}, {"url": "https://git.kernel.org/stable/c/a025c4991a7d83edc4dd339e3ea86d8ff6226eca"}], "title": "ksmbd: reserve space for the UTF-16 terminator in stream info", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/smb/server/smb2pdu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "06a751809ebd33e95b05bf733697318a17a4872b", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "0e64f89563164719ceb1aa33f2a8bfd6391fa340", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "a025c4991a7d83edc4dd339e3ea86d8ff6226eca", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "6.18.61", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "7.3.2", "status": "affected", "version": "0", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/smb/server/smb2pdu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.61", "versionType": "semver"}, {"lessThanOrEqual": "7.3.*", "status": "unaffected", "version": "7.3.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.4-rc1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: reserve space for the UTF-16 terminator in stream info\n\nsmb_strtoUTF16() always writes a terminating zero UTF-16 unit after the\nconverted characters, but get_file_stream_info() budgets only\nsizeof(struct smb2_file_stream_info) + streamlen * 2 for a stream entry\nand sizeof(struct smb2_file_stream_info) + 7 * 2 for the trailing\n\"::$DATA\" entry. When an entry exactly fills the 448-byte small response\nbuffer, the terminator is written two bytes past the allocation.\n\nReserve one extra UTF-16 unit in both budget checks. The terminator is\nnot part of the wire format, so the reported lengths are unchanged."}], "id": "CVE-2026-99273", "lastModified": "2026-11-07T14:17:02.600", "metrics": {}, "published": "2026-11-07T14:17:02.600", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/06a751809ebd33e95b05bf733697318a17a4872b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0e64f89563164719ceb1aa33f2a8bfd6391fa340"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a025c4991a7d83edc4dd339e3ea86d8ff6226eca"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

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