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.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/36315a330e067f7773196940552feacb1debbef1
https://git.kernel.org/stable/c/7e94cb967778e074411940db4db97f22ed77560c
https://git.kernel.org/stable/c/9b45125501aad2dff7730970461b455b0e0658ee
https://git.kernel.org/stable/c/a28c486434634f6d1e120711d2b09f3eddea6c98
https://git.kernel.org/stable/c/afbf39c0f2297c6abef6d670a82a2079b0836191
https://git.kernel.org/stable/c/b895dbed8ac9e12a5ffa1a2165575a8469f8340d
https://git.kernel.org/stable/c/f63edb54d8f738f9c21e2068c777ae1c097df6b7
https://git.kernel.org/stable/c/f6da500b0f8106882598b6dec87fe37d653946cf

Configurations

No configuration.

History

17 Sep 2026, 17:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 17:18

Updated : 2026-09-17 17:18

NVD link : CVE-2026-93120

Mitre link : CVE-2026-93120

CVE.ORG link : CVE-2026-93120

JSON object : View

Products Affected

No product.

CWE

No CWE.

{"id": "CVE-2026-93120", "cveTags": [], "metrics": {}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "76180d716f91f035d9c8639497cf5459b44e1a51", "lessThan": "b895dbed8ac9e12a5ffa1a2165575a8469f8340d", "versionType": "git"}, {"status": "affected", "version": "76180d716f91f035d9c8639497cf5459b44e1a51", "lessThan": "9b45125501aad2dff7730970461b455b0e0658ee", "versionType": "git"}, {"status": "affected", "version": "76180d716f91f035d9c8639497cf5459b44e1a51", "lessThan": "f6da500b0f8106882598b6dec87fe37d653946cf", "versionType": "git"}, {"status": "affected", "version": "76180d716f91f035d9c8639497cf5459b44e1a51", "lessThan": "a28c486434634f6d1e120711d2b09f3eddea6c98", "versionType": "git"}, {"status": "affected", "version": "76180d716f91f035d9c8639497cf5459b44e1a51", "lessThan": "7e94cb967778e074411940db4db97f22ed77560c", "versionType": "git"}, {"status": "affected", "version": "76180d716f91f035d9c8639497cf5459b44e1a51", "lessThan": "afbf39c0f2297c6abef6d670a82a2079b0836191", "versionType": "git"}, {"status": "affected", "version": "76180d716f91f035d9c8639497cf5459b44e1a51", "lessThan": "36315a330e067f7773196940552feacb1debbef1", "versionType": "git"}, {"status": "affected", "version": "76180d716f91f035d9c8639497cf5459b44e1a51", "lessThan": "f63edb54d8f738f9c21e2068c777ae1c097df6b7", "versionType": "git"}], "programFiles": ["drivers/usb/gadget/configfs.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.13"}, {"status": "unaffected", "version": "0", "lessThan": "4.13", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.270", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.221", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.188", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.157", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.110", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.52", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.2.6", "versionType": "semver", "lessThanOrEqual": "7.2.*"}, {"status": "unaffected", "version": "7.3-rc1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/usb/gadget/configfs.c"], "defaultStatus": "affected"}]}], "published": "2026-09-17T17:18:06.667", "references": [{"url": "https://git.kernel.org/stable/c/36315a330e067f7773196940552feacb1debbef1", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7e94cb967778e074411940db4db97f22ed77560c", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9b45125501aad2dff7730970461b455b0e0658ee", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a28c486434634f6d1e120711d2b09f3eddea6c98", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/afbf39c0f2297c6abef6d670a82a2079b0836191", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b895dbed8ac9e12a5ffa1a2165575a8469f8340d", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f63edb54d8f738f9c21e2068c777ae1c097df6b7", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f6da500b0f8106882598b6dec87fe37d653946cf", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Received", "descriptions": [{"lang": "en", "value": "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 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."}], "lastModified": "2026-09-17T17:18:06.667", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}