CVE-2026-93120 Affecting linux-6.12 package, versions <6.12.111-1~deb12u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN12-LINUX612-20507297
- published5 Oct 2026
- disclosed17 Sept 2026
Introduced: 17 Sep 2026
NewCVE-2026-93120 (opens in a new tab)How to fix?
Upgrade Debian:12 linux-6.12 to version 6.12.111-1~deb12u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream linux-6.12 package and not the linux-6.12 package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2026-93120
- 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