{"id":"CVE-2026-98769","published":"2026-10-18T16:17:30.813","lastModified":"2026-10-19T10:19:41.037","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_uac1_legacy: validate bRequest index in generic_{set,get}_cmd\n\ngeneric_set_cmd() and generic_get_cmd() use the low nibble of\nctrl->bRequest as an index into con->data[]:\n\n    u8 cmd = (ctrl->bRequest & 0x0F);  /* 0 .. 15 */\n    ...\n    con->data[cmd] = value;            /* OOB when cmd >= 5 */\n\nstruct usb_audio_control (include/linux/usb/audio.h) declares data as\na 5-element array, so indices 5 through 15 write (or read) up to 44\nbytes past the end of the array on the heap.\n\nA malicious USB host can craft a class-specific SET_CUR / GET_CUR\nrequest with an arbitrary bRequest value, triggering the out-of-bounds\naccess from an IRQ completion handler with no further preconditions.\n\nAdd an ARRAY_SIZE() guard to both functions.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/36f3f009049bc91e14dc856007932473318d12f8","tags":[]},{"url":"https://git.kernel.org/stable/c/697cfe6e53b66cda196d6f8833b0ee97fefd0a8a","tags":[]},{"url":"https://git.kernel.org/stable/c/8c611876c002d712ae5f246af5188432c708f79d","tags":[]},{"url":"https://git.kernel.org/stable/c/9062d50e75c24dc7911be05c9b1719b3b256af15","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}