{"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":"2026-11-10T18:15:27.637Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-11-10T18:15:27.637Z"},"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":"583ede545a14f275a959772b5e1e50fe3e14b861","status":"affected","versionType":"git"},{"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":"6.12.117","status":"affected","versionType":"semver"},{"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":"6.12.117","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"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":"6.12.117"},{"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/583ede545a14f275a959772b5e1e50fe3e14b861"},{"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"}}}}