{"id":"CVE-2026-92480","title":"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","summary":"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() expect…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= 4b828fe156a662a4b6135019bf077040340f299b < 66da25277256b6bf4c3fdbf3c9bfd43324c9cf25","Linux >= 4b828fe156a662a4b6135019bf077040340f299b < d96e83d028d7d8762e424e49c671d49ac2ecf14f","Linux 5.4"],"published":"2026-09-17","updated":"2026-10-15","sourceUpdated":"2026-10-15T11:18:04.390","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92480","references":[{"url":"https://git.kernel.org/stable/c/66da25277256b6bf4c3fdbf3c9bfd43324c9cf25","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d96e83d028d7d8762e424e49c671d49ac2ecf14f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f3480c59f4ce97d831e9d06f5a2b9c20547ed1a4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92480.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-92480"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536513"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-92480"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92480"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-92480.mbox"},{"url":"https://git.kernel.org/stable/c/566109f1ee4e389b4effab43b0ce1fdab302e9de"},{"url":"https://git.kernel.org/stable/c/02dd1a65dff842d9360a38ebe243dc8f6adbbaf5"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00209,"epssPercentile":0.10947,"ingestedAt":"2026-09-17T16:21:47.788Z","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-125"],"slug":"CVE-2026-92480","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92480.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":225565,"id":"CVE-2026-92480","ts":1792498298395,"field":"cvss","old":null,"new":"5.5"},{"seq":225564,"id":"CVE-2026-92480","ts":1792498298395,"field":"severity","old":"none","new":"medium"}]}