Minsuk Kang 9dab880d67 nfc: pn533: Wait for out_urb's completion in pn533_usb_send_frame() ... Fix a use-after-free that occurs in hcd when in_urb sent from pn533_usb_send_frame() is completed earlier than out_urb. Its callback frees the skb data in pn533_send_async_complete() that is used as a transfer buffer of out_urb. Wait before sending in_urb until the callback of out_urb is called. To modify the callback of out_urb alone, separate the complete function of out_urb and ack_urb. Found by a modified version of syzkaller. BUG: KASAN: use-after-free in dummy_timer Call Trace: memcpy (mm/kasan/shadow.c:65) dummy_perform_transfer (drivers/usb/gadget/udc/dummy_hcd.c:1352) transfer (drivers/usb/gadget/udc/dummy_hcd.c:1453) dummy_timer (drivers/usb/gadget/udc/dummy_hcd.c:1972) arch_static_branch (arch/x86/include/asm/jump_label.h:27) static_key_false (include/linux/jump_label.h:207) timer_expire_exit (include/trace/events/timer.h:127) call_timer_fn (kernel/time/timer.c:1475) expire_timers (kernel/time/timer.c:1519) __run_timers (kernel/time/timer.c:1790) run_timer_softirq (kernel/time/timer.c:1803) Fixes: c46ee38620 ("NFC: pn533: add NXP pn533 nfc device driver") Signed-off-by: Minsuk Kang <linuxlovemin@yonsei.ac.kr> Signed-off-by: David S. Miller <davem@davemloft.net>		2023-01-09 07:34:13 +00:00
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Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
Makefile	nfc: pn533: add UART phy driver	2019-10-29 21:05:26 -07:00
i2c.c	nfc: pn533: Convert to i2c's .probe_new()	2022-11-23 12:50:07 -08:00
pn533.c	treewide: Convert del_timer*() to timer_shutdown*()	2022-12-25 13:38:09 -08:00
pn533.h	nfc: pn533: Constify pn533_phy_ops	2021-10-07 13:35:10 +01:00
uart.c	treewide: Convert del_timer*() to timer_shutdown*()	2022-12-25 13:38:09 -08:00
usb.c	nfc: pn533: Wait for out_urb's completion in pn533_usb_send_frame()	2023-01-09 07:34:13 +00:00