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 --- drivers/clocksource/timer-of.h | 72 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 drivers/clocksource/timer-of.h (limited to 'drivers/clocksource/timer-of.h') diff --git a/drivers/clocksource/timer-of.h b/drivers/clocksource/timer-of.h new file mode 100644 index 000000000..74a632b85 --- /dev/null +++ b/drivers/clocksource/timer-of.h @@ -0,0 +1,72 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __TIMER_OF_H__ +#define __TIMER_OF_H__ + +#include + +#define TIMER_OF_BASE 0x1 +#define TIMER_OF_CLOCK 0x2 +#define TIMER_OF_IRQ 0x4 + +struct of_timer_irq { + int irq; + int index; + const char *name; + unsigned long flags; + irq_handler_t handler; +}; + +struct of_timer_base { + void __iomem *base; + const char *name; + int index; +}; + +struct of_timer_clk { + struct clk *clk; + const char *name; + int index; + unsigned long rate; + unsigned long period; +}; + +struct timer_of { + unsigned int flags; + struct device_node *np; + struct clock_event_device clkevt; + struct of_timer_base of_base; + struct of_timer_irq of_irq; + struct of_timer_clk of_clk; + void *private_data; +}; + +static inline struct timer_of *to_timer_of(struct clock_event_device *clkevt) +{ + return container_of(clkevt, struct timer_of, clkevt); +} + +static inline void __iomem *timer_of_base(struct timer_of *to) +{ + return to->of_base.base; +} + +static inline int timer_of_irq(struct timer_of *to) +{ + return to->of_irq.irq; +} + +static inline unsigned long timer_of_rate(struct timer_of *to) +{ + return to->of_clk.rate; +} + +static inline unsigned long timer_of_period(struct timer_of *to) +{ + return to->of_clk.period; +} + +int timer_of_init(struct device_node *np, struct timer_of *to); + +void timer_of_cleanup(struct timer_of *to); + +#endif -- cgit v1.3.1