| Name | CVE-2026-68366 |
| Description | In the Linux kernel, the following vulnerability has been resolved: usb: gadget: uvc: clamp SEND_RESPONSE length to the response buffer uvc_send_response() builds the UVC control response from a user-supplied struct uvc_request_data: req->length = min_t(unsigned int, uvc->event_length, data->length); ... memcpy(req->buf, data->data, req->length); req->length is clamped to uvc->event_length, which is taken from the host control request wLength (up to UVC_MAX_REQUEST_SIZE, 64), and to data->length, which comes from the UVCIOC_SEND_RESPONSE ioctl and is only checked for being negative. The source buffer data->data is only 60 bytes, so a response with uvc->event_length and data->length both greater than 60 makes memcpy() read past the end of data->data. Clamp req->length to sizeof(data->data) as well. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4745-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | bullseye | 5.10.223-1 | vulnerable |
| bullseye (security) | 5.10.262-1 | vulnerable | |
| bookworm | 6.1.176-1 | vulnerable | |
| bookworm (security) | 6.1.180-1 | vulnerable | |
| trixie | 6.12.94-1 | vulnerable | |
| trixie (security) | 6.12.107-1 | fixed | |
| forky | 7.1.8-2 | fixed | |
| sid | 7.1.12-1 | fixed | |
| linux-6.12 (PTS) | bookworm (security) | 6.12.101-1~deb12u1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | trixie | 6.12.101-1 | |||
| linux | source | (unstable) | 7.1.6-1 | |||
| linux-6.12 | source | bookworm | 6.12.101-1~deb12u1 | DLA-4745-1 |
https://git.kernel.org/linus/b70dc75e85ba968b7b76eebfe5d63000080b875b (7.2-rc5)