CVE-2026-92480
UnknownSummary
In the Linux kernel, the scsi: ufs: core driver improperly validated string descriptors. It passed a byte count instead of a UTF-16 code-unit count to utf16s_to_utf8s(), which could read beyond the descriptor buffer, and copying bLength bytes could read beyond the response buffer.
Risk Assessment
May lead to an out-of-bounds read, data disclosure, or kernel crash when processing UFS string descriptors.
Recommendation
Update the Linux kernel to a version containing the fix that validates an even payload byte count and copies only the UTF-16 payload.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Validate string descriptors The string descriptor length includes a two-byte header while the UTF-16 payload starts after it. utf16s_to_utf8s() expects a count of UTF-16 code units, not bytes. Passing the payload byte count can make it read beyond the descriptor buffer. Validate that the payload has an even byte count, pass a code-unit count to the converter, and allocate sufficient UTF-8 output space. The raw string buffer starts after the descriptor header but its size is bLength. Copying bLength bytes from that pointer can read beyond the response buffer. Allocate a zeroed bLength-sized buffer and copy only the UTF-16 payload. This preserves the raw buffer size consumed by the RPMB device-ID ABI while avoiding the overread.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS