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CVE-2026-93120

Unknown

Last modified

CVE-2026-93120 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: usb: gadget: configfs: fix out-of-bounds read of qw_sign os_desc_qw_sign_show() passes OS_STRING_QW_SIGN_LEN as the input length to utf16s_to_utf8s(), but that argument counts UTF-16 code units while OS_STRING_QW_SIGN_LEN (14) is the byte size of qw_sign[]. The array holds only OS_STRING_QW_SIGN_LEN / 2 (7) code units, so the conversion reads up to 7 units (14 bytes) past the end of qw_sign[] into the following members of struct gadget_info when the stored signature fills the array without a NUL terminator, exposing those bytes through the configfs attribute. The store path halves the count for its input bound but passes the full byte count as the utf8s_to_utf16s() output limit; use the destination code-unit count in both directions..

Description

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: configfs: fix out-of-bounds read of qw_sign os_desc_qw_sign_show() passes OS_STRING_QW_SIGN_LEN as the input length to utf16s_to_utf8s(), but that argument counts UTF-16 code units while OS_STRING_QW_SIGN_LEN (14) is the byte size of qw_sign[]. The array holds only OS_STRING_QW_SIGN_LEN / 2 (7) code units, so the conversion reads up to 7 units (14 bytes) past the end of qw_sign[] into the following members of struct gadget_info when the stored signature fills the array without a NUL terminator, exposing those bytes through the configfs attribute. The store path halves the count for its input bound but passes the full byte count as the utf8s_to_utf16s() output limit; use the destination code-unit count in both directions.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 76180d716f91f035d9c8639497cf5459b44e1a51, < b895dbed8ac9e12a5ffa1a2165575a8469f8340d; >= 76180d716f91f035d9c8639497cf5459b44e1a51, < 9b45125501aad2dff7730970461b455b0e0658ee; >= 76180d716f91f035d9c8639497cf5459b44e1a51, < f6da500b0f8106882598b6dec87fe37d653946cf; >= 76180d716f91f035d9c8639497cf5459b44e1a51, < a28c486434634f6d1e120711d2b09f3eddea6c98; >= 76180d716f91f035d9c8639497cf5459b44e1a51, < 7e94cb967778e074411940db4db97f22ed77560c; >= 76180d716f91f035d9c8639497cf5459b44e1a51, < afbf39c0f2297c6abef6d670a82a2079b0836191; >= 76180d716f91f035d9c8639497cf5459b44e1a51, < 36315a330e067f7773196940552feacb1debbef1; >= 76180d716f91f035d9c8639497cf5459b44e1a51, < f63edb54d8f738f9c21e2068c777ae1c097df6b7
LinuxLinux4.13

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-93120?
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: configfs: fix out-of-bounds read of qw_sign os_desc_qw_sign_show() passes OS_STRING_QW_SIGN_LEN as the input length to utf16s_to_utf8s(), but that argument counts UTF-16 code units while OS_STRING_QW_SIGN_LEN (14) is the byte size of qw_sign[]. The array holds only OS_STRING_QW_SIGN_LEN / 2 (7) code units, so the conversion reads up to 7 units (14 bytes) past the end of qw_sign[] into the following members of struct gadget_info when the stored signature fills the array without a NUL terminator, exposing those bytes through the configfs attribute. The store path halves the count for its input bound but passes the full byte count as the utf8s_to_utf16s() output limit; use the destination code-unit count in both directions.
How severe is CVE-2026-93120?
Severity scoring for CVE-2026-93120 is pending analysis.
How do I fix CVE-2026-93120?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST