linux: In the Linux kernel, the following vulnerability has been resolved: HID: usbhid: fix info leak in hid_submit_ctrl I...
CVE-2021-46906 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-46906, released February 26, 2024. It is not reported as exploited. Patch Radar priority: Routine.
In the Linux kernel, the following vulnerability has been resolved: HID: usbhid: fix info leak in hid_submit_ctrl In hid_submit_ctrl(), the way of calculating the report length doesn't take into account that report->size can be zero. When running the syzkaller reproducer, a report of size 0 causes hid_submit_ctrl) to calculate transfer_buffer_length as 16384. When this urb is passed to the usb core layer, KMSAN reports an info leak of 16384 bytes. To fix this, first modify hid_report_len() to account for the zero report size case by using DIV_ROUND_UP for the division. Then, call it from hid_submit_ctrl().
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 5.14.6-1 | DEBIAN-CVE-2021-46906 | Feb 26, 2024 |
| linux · Debian 13.5 (trixie) | 5.14.6-1 | DEBIAN-CVE-2021-46906 | Feb 26, 2024 |
| linux · Debian 14 | 5.14.6-1 | DEBIAN-CVE-2021-46906 | Feb 26, 2024 |
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