{"id":"CVE-2026-93120","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: configfs: fix out-of-bounds read of qw_sign\n\nos_desc_qw_sign_show() passes OS_STRING_QW_SIGN_LEN as the input\nlength to utf16s_to_utf8s(), but that argumen…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: configfs: fix out-of-bounds read of qw_sign\n\nos_desc_qw_sign_show() passes OS_STRING_QW_SIGN_LEN as the input\nlength to utf16s_to_utf8s(), but that argumen…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 76180d716f91f035d9c8639497cf5459b44e1a51 < b895dbed8ac9e12a5ffa1a2165575a8469f8340d","Linux >= 76180d716f91f035d9c8639497cf5459b44e1a51 < 9b45125501aad2dff7730970461b455b0e0658ee","Linux >= 76180d716f91f035d9c8639497cf5459b44e1a51 < f6da500b0f8106882598b6dec87fe37d653946cf","Linux >= 76180d716f91f035d9c8639497cf5459b44e1a51 < a28c486434634f6d1e120711d2b09f3eddea6c98","Linux >= 76180d716f91f035d9c8639497cf5459b44e1a51 < 7e94cb967778e074411940db4db97f22ed77560c","Linux >= 76180d716f91f035d9c8639497cf5459b44e1a51 < afbf39c0f2297c6abef6d670a82a2079b0836191","Linux >= 76180d716f91f035d9c8639497cf5459b44e1a51 < 36315a330e067f7773196940552feacb1debbef1","Linux >= 76180d716f91f035d9c8639497cf5459b44e1a51 < f63edb54d8f738f9c21e2068c777ae1c097df6b7","Linux 4.13"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:18:06.667","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93120","references":[{"url":"https://git.kernel.org/stable/c/36315a330e067f7773196940552feacb1debbef1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7e94cb967778e074411940db4db97f22ed77560c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9b45125501aad2dff7730970461b455b0e0658ee","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a28c486434634f6d1e120711d2b09f3eddea6c98","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/afbf39c0f2297c6abef6d670a82a2079b0836191","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b895dbed8ac9e12a5ffa1a2165575a8469f8340d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f63edb54d8f738f9c21e2068c777ae1c097df6b7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f6da500b0f8106882598b6dec87fe37d653946cf","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.751Z","epss":0.0022,"epssPercentile":0.11066,"slug":"CVE-2026-93120","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: configfs: fix out-of-bounds read of qw_sign\n\nos_desc_qw_sign_show() passes OS_STRING_QW_SIGN_LEN as the input\nlength to utf16s_to_utf8s(), but that argument counts UTF-16 code\nunits while OS_STRING_QW_SIGN_LEN (14) is the byte size of qw_sign[].\nThe array holds only OS_STRING_QW_SIGN_LEN / 2 (7) code units, so the\nconversion reads up to 7 units (14 bytes) past the end of qw_sign[]\ninto the following members of struct gadget_info when the stored\nsignature fills the array without a NUL terminator, exposing those\nbytes through the configfs attribute.\n\nThe store path halves the count for its input bound but passes the\nfull byte count as the utf8s_to_utf16s() output limit; use the\ndestination code-unit count in both directions.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}