From ff917923f4fb9c83717ba135ee47d7e4c1567bb7 Mon Sep 17 00:00:00 2001 From: Muhammad Bilal Date: Tue, 28 Jul 2026 17:54:55 +0500 Subject: staging: rtl8723bs: fix OOB read in rtw_action_frame_parse() rtw_action_frame_parse() takes a frame_len parameter but never actually checks it before indexing into the frame body: const u8 *frame_body = frame + sizeof(struct ieee80211_hdr_3addr); ... c = frame_body[0]; ... a = frame_body[1]; frame_body already points 24 bytes (sizeof(struct ieee80211_hdr_3addr)) into frame, so reading frame_body[0] and frame_body[1] requires frame_len >= 26. A management action frame shorter than that (e.g. exactly 24 bytes, the minimum a malicious peer can send) causes a 1-2 byte out-of-bounds read. This is reachable from rtw_cfg80211_monitor_if_xmit_entry() and cfg80211_rtw_mgmt_tx() in ioctl_cfg80211.c, both of which pass attacker/user-influenced frame buffers and lengths straight through. Add the missing length check before frame_body is dereferenced. Fixes: 554c0a3abf216 ("staging: Add rtl8723bs sdio wifi driver") Cc: stable@vger.kernel.org Signed-off-by: Muhammad Bilal Link: https://patch.msgid.link/20260728125456.32359-3-meatuni001@gmail.com Signed-off-by: Greg Kroah-Hartman --- include/soc/tegra/tegra-cbb.h | 47 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 include/soc/tegra/tegra-cbb.h (limited to 'include/soc/tegra/tegra-cbb.h') diff --git a/include/soc/tegra/tegra-cbb.h b/include/soc/tegra/tegra-cbb.h new file mode 100644 index 000000000..e864c2ebe --- /dev/null +++ b/include/soc/tegra/tegra-cbb.h @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2021-2022, NVIDIA CORPORATION. All rights reserved + */ + +#ifndef TEGRA_CBB_H +#define TEGRA_CBB_H + +#include + +struct tegra_cbb_error { + const char *code; + const char *source; + const char *desc; +}; + +struct tegra_cbb { + struct device *dev; + const struct tegra_cbb_ops *ops; + struct list_head node; +}; + +struct tegra_cbb_ops { + int (*debugfs_show)(struct tegra_cbb *cbb, struct seq_file *s, void *v); + int (*interrupt_enable)(struct tegra_cbb *cbb); + void (*error_enable)(struct tegra_cbb *cbb); + void (*fault_enable)(struct tegra_cbb *cbb); + void (*stall_enable)(struct tegra_cbb *cbb); + void (*error_clear)(struct tegra_cbb *cbb); + u32 (*get_status)(struct tegra_cbb *cbb); +}; + +int tegra_cbb_get_irq(struct platform_device *pdev, unsigned int *nonsec_irq, + unsigned int *sec_irq); +__printf(2, 3) +void tegra_cbb_print_err(struct seq_file *file, const char *fmt, ...); + +void tegra_cbb_print_cache(struct seq_file *file, u32 cache); +void tegra_cbb_print_prot(struct seq_file *file, u32 prot); +int tegra_cbb_register(struct tegra_cbb *cbb); + +void tegra_cbb_fault_enable(struct tegra_cbb *cbb); +void tegra_cbb_stall_enable(struct tegra_cbb *cbb); +void tegra_cbb_error_clear(struct tegra_cbb *cbb); +u32 tegra_cbb_get_status(struct tegra_cbb *cbb); + +#endif /* TEGRA_CBB_H */ -- cgit v1.3.1