{"id":"CVE-2026-93808","published":"2026-09-24T17:17:13.797","lastModified":"2026-09-25T13:17:21.670","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: caiaq: validate EP1 reply lengths\n\nusb_ep1_command_reply_dispatch() uses buf[0] as a command byte and then\nreads command-specific fixed items from the same URB buffer. Several\npaths use buf + 1, buf[1], buf[2], or buf + 3 without first proving that\nurb->actual_length contains those bytes.\n\nAdd per-command length checks, use a payload length derived from the\nbytes after the command byte for the control-state copy, and reject short\nanalog input payloads before the input helper reads fixed offsets from\nthe EP1 reply.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/74f3c639f64fa5da4e1613149798b5089bce2807","tags":[]},{"url":"https://git.kernel.org/stable/c/aba30af07d4fe499b50209801eba9da8a815522f","tags":[]},{"url":"https://git.kernel.org/stable/c/af8a172c4f71ac30d625f2966d2389a7fa872819","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}