{"id":"CVE-2026-92480","state":"PUBLISHED","title":"scsi: ufs: core: Validate string descriptors","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ufs: core: Validate string descriptors\n\nThe string descriptor length includes a two-byte header while the UTF-16\npayload starts after it. utf16s_to_utf8s() expects a count of UTF-16 code\nunits, not bytes. Passing the payload byte count can make it read beyond\nthe descriptor buffer.\n\nValidate that the payload has an even byte count, pass a code-unit count to\nthe converter, and allocate sufficient UTF-8 output space.\n\nThe raw string buffer starts after the descriptor header but its size is\nbLength. Copying bLength bytes from that pointer can read beyond the\nresponse buffer.\n\nAllocate a zeroed bLength-sized buffer and copy only the UTF-16\npayload. This preserves the raw buffer size consumed by the RPMB device-ID\nABI while avoiding the overread.","publishedAt":"2026-09-17T16:09:57.719Z","updatedAt":"2026-10-30T12:35:36.682Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4b828fe156a662a4b6135019bf077040340f299b","status":"affected","lessThan":"22c076f72ad67d89dab58d9c97a17c33e8130e82","versionType":"git"},{"version":"4b828fe156a662a4b6135019bf077040340f299b","status":"affected","lessThan":"566109f1ee4e389b4effab43b0ce1fdab302e9de","versionType":"git"},{"version":"4b828fe156a662a4b6135019bf077040340f299b","status":"affected","lessThan":"02dd1a65dff842d9360a38ebe243dc8f6adbbaf5","versionType":"git"},{"version":"4b828fe156a662a4b6135019bf077040340f299b","status":"affected","lessThan":"f3480c59f4ce97d831e9d06f5a2b9c20547ed1a4","versionType":"git"},{"version":"4b828fe156a662a4b6135019bf077040340f299b","status":"affected","lessThan":"66da25277256b6bf4c3fdbf3c9bfd43324c9cf25","versionType":"git"},{"version":"4b828fe156a662a4b6135019bf077040340f299b","status":"affected","lessThan":"d96e83d028d7d8762e424e49c671d49ac2ecf14f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/ufs/core/ufshcd.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.4","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/ufs/core/ufshcd.c"]}],"references":["https://git.kernel.org/stable/c/22c076f72ad67d89dab58d9c97a17c33e8130e82","https://git.kernel.org/stable/c/566109f1ee4e389b4effab43b0ce1fdab302e9de","https://git.kernel.org/stable/c/02dd1a65dff842d9360a38ebe243dc8f6adbbaf5","https://git.kernel.org/stable/c/f3480c59f4ce97d831e9d06f5a2b9c20547ed1a4","https://git.kernel.org/stable/c/66da25277256b6bf4c3fdbf3c9bfd43324c9cf25","https://git.kernel.org/stable/c/d96e83d028d7d8762e424e49c671d49ac2ecf14f"],"weaknesses":[],"ingestedAt":"2026-10-30T12:54:04.478Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/92xxx/CVE-2026-92480.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-92480","state":"PUBLISHED","datePublished":"2026-09-17T16:09:57.719Z","dateUpdated":"2026-10-30T12:35:36.682Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-16T12:21:13.870Z"},"containers":{"cna":{"title":"scsi: ufs: core: Validate string descriptors","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ufs: core: Validate string descriptors\n\nThe string descriptor length includes a two-byte header while the UTF-16\npayload starts after it. utf16s_to_utf8s() expects a count of UTF-16 code\nunits, not bytes. Passing the payload byte count can make it read beyond\nthe descriptor buffer.\n\nValidate that the payload has an even byte count, pass a code-unit count to\nthe converter, and allocate sufficient UTF-8 output space.\n\nThe raw string buffer starts after the descriptor header but its size is\nbLength. Copying bLength bytes from that pointer can read beyond the\nresponse buffer.\n\nAllocate a zeroed bLength-sized buffer and copy only the UTF-16\npayload. This preserves the raw buffer size consumed by the RPMB device-ID\nABI while avoiding the overread."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4b828fe156a662a4b6135019bf077040340f299b","status":"affected","lessThan":"22c076f72ad67d89dab58d9c97a17c33e8130e82","versionType":"git"},{"version":"4b828fe156a662a4b6135019bf077040340f299b","status":"affected","lessThan":"566109f1ee4e389b4effab43b0ce1fdab302e9de","versionType":"git"},{"version":"4b828fe156a662a4b6135019bf077040340f299b","status":"affected","lessThan":"02dd1a65dff842d9360a38ebe243dc8f6adbbaf5","versionType":"git"},{"version":"4b828fe156a662a4b6135019bf077040340f299b","status":"affected","lessThan":"f3480c59f4ce97d831e9d06f5a2b9c20547ed1a4","versionType":"git"},{"version":"4b828fe156a662a4b6135019bf077040340f299b","status":"affected","lessThan":"66da25277256b6bf4c3fdbf3c9bfd43324c9cf25","versionType":"git"},{"version":"4b828fe156a662a4b6135019bf077040340f299b","status":"affected","lessThan":"d96e83d028d7d8762e424e49c671d49ac2ecf14f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/ufs/core/ufshcd.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.4","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/ufs/core/ufshcd.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/22c076f72ad67d89dab58d9c97a17c33e8130e82"},{"url":"https://git.kernel.org/stable/c/566109f1ee4e389b4effab43b0ce1fdab302e9de"},{"url":"https://git.kernel.org/stable/c/02dd1a65dff842d9360a38ebe243dc8f6adbbaf5"},{"url":"https://git.kernel.org/stable/c/f3480c59f4ce97d831e9d06f5a2b9c20547ed1a4"},{"url":"https://git.kernel.org/stable/c/66da25277256b6bf4c3fdbf3c9bfd43324c9cf25"},{"url":"https://git.kernel.org/stable/c/d96e83d028d7d8762e424e49c671d49ac2ecf14f"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:35:36.682Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}