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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
a5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 to < eaf783c005299a702f2cc96b08cd21ede081f098affecteda5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 to < 568e68d8f80395a64848aa2946af8ade72da0ffbaffecteda5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 to < 82ec2c1e456b17451f0736c3983402642f961733affecteda5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 to < 4e116372b7a4f87df0dc0ed4b0ab5b0bb0cc5796affecteda5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 to < 662f6c6c6ff8a6c508e1646c09cae74e28f3cca6affecteda5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 to < 1f03658f3e9b2f8fd1d1003ba389a0390b49a350affecteda5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 to < c8510fbbea09ef0170b56b14dc2b5890dc75be07affecteda5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 to < b70dc75e85ba968b7b76eebfe5d63000080b875baffected
Linux Linux
Default version status: affected
3.10affected0 to < 3.10unaffected5.10.265 to ≤ 5.10.*unaffected5.15.216 to ≤ 5.15.*unaffected6.1.183 to ≤ 6.1.*unaffected6.6.148 to ≤ 6.6.*unaffected6.12.101 to ≤ 6.12.*unaffected6.18.42 to ≤ 6.18.*unaffected7.1.6 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/eaf783c005299a702f2cc96b08cd21ede081f098 ↗
- https://git.kernel.org/stable/c/568e68d8f80395a64848aa2946af8ade72da0ffb ↗
- https://git.kernel.org/stable/c/82ec2c1e456b17451f0736c3983402642f961733 ↗
- https://git.kernel.org/stable/c/4e116372b7a4f87df0dc0ed4b0ab5b0bb0cc5796 ↗
- https://git.kernel.org/stable/c/662f6c6c6ff8a6c508e1646c09cae74e28f3cca6 ↗
- https://git.kernel.org/stable/c/1f03658f3e9b2f8fd1d1003ba389a0390b49a350 ↗
- https://git.kernel.org/stable/c/c8510fbbea09ef0170b56b14dc2b5890dc75be07 ↗
- https://git.kernel.org/stable/c/b70dc75e85ba968b7b76eebfe5d63000080b875b ↗