From 9062d50e75c24dc7911be05c9b1719b3b256af15 Mon Sep 17 00:00:00 2001 From: Liu Chao Date: Mon, 21 Sep 2026 15:25:51 +0800 Subject: usb: gadget: f_uac1_legacy: validate bRequest index in generic_{set,get}_cmd generic_set_cmd() and generic_get_cmd() use the low nibble of ctrl->bRequest as an index into con->data[]: u8 cmd = (ctrl->bRequest & 0x0F); /* 0 .. 15 */ ... con->data[cmd] = value; /* OOB when cmd >= 5 */ struct usb_audio_control (include/linux/usb/audio.h) declares data as a 5-element array, so indices 5 through 15 write (or read) up to 44 bytes past the end of the array on the heap. A malicious USB host can craft a class-specific SET_CUR / GET_CUR request with an arbitrary bRequest value, triggering the out-of-bounds access from an IRQ completion handler with no further preconditions. Add an ARRAY_SIZE() guard to both functions. Fixes: c47d7b09891a ("USB: audio: add USB audio class definitions") Cc: stable Reviewed-by: Weibin Liu Signed-off-by: Liu Chao Reviewed-by: Ivy Lopez Link: https://patch.msgid.link/20260921072551.3708191-1-liuc63@xiaopeng.com Signed-off-by: Greg Kroah-Hartman --- include/net/ethoc.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 include/net/ethoc.h (limited to 'include/net/ethoc.h') diff --git a/include/net/ethoc.h b/include/net/ethoc.h new file mode 100644 index 000000000..73810f3ca --- /dev/null +++ b/include/net/ethoc.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * linux/include/net/ethoc.h + * + * Copyright (C) 2008-2009 Avionic Design GmbH + * + * Written by Thierry Reding + */ + +#ifndef LINUX_NET_ETHOC_H +#define LINUX_NET_ETHOC_H 1 + +#include +#include + +struct ethoc_platform_data { + u8 hwaddr[IFHWADDRLEN]; + s8 phy_id; + u32 eth_clkfreq; + bool big_endian; +}; + +#endif /* !LINUX_NET_ETHOC_H */ -- cgit v1.3.1