CVE-2026-93808
ALSA: usb-audio: caiaq: validate EP1 reply lengths
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: caiaq: validate EP1 reply lengths usb_ep1_command_reply_dispatch() uses buf[0] as a command byte and then reads command-specific fixed items from the same URB buffer. Several paths use buf + 1, buf[1], buf[2], or buf + 3 without first proving that urb->actual_length contains those bytes. Add per-command length checks, use a payload length derived from the bytes after the command byte for the control-state copy, and reject short analog input payloads before the input helper reads fixed offsets from the EP1 reply.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 24, 2026 |
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Affected Versions
Linux / Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < af8a172c4f71ac30d625f2966d2389a7fa872819 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 74f3c639f64fa5da4e1613149798b5089bce2807 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < aba30af07d4fe499b50209801eba9da8a815522f 0 < 6.12.111 0 < 6.18.53
Linux / Linux
All versions affected