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Filename Latest commit message Latest commit date
Minsuk Kang 9424d2205f nfc: pn533: Wait for out_urb's completion in pn533_usb_send_frame()
[ Upstream commit 9dab880d675b9d0dd56c6428e4e8352a3339371d ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-18 11:42:04 +01:00
arch x86/boot: Avoid using Intel mnemonics in AT&T syntax asm 2023-01-18 11:42:03 +01:00
block
certs
crypto
Documentation docs: Fix the docs build with Sphinx 6.0 2023-01-18 11:42:01 +01:00
drivers nfc: pn533: Wait for out_urb's completion in pn533_usb_send_frame() 2023-01-18 11:42:04 +01:00
fs ext4: fix uninititialized value in 'ext4_evict_inode' 2023-01-18 11:42:03 +01:00
include quota: Factor out setup of quota inode 2023-01-18 11:42:02 +01:00
init
ipc
kernel
lib
LICENSES
mm
net tipc: fix unexpected link reset due to discovery messages 2023-01-18 11:42:04 +01:00
samples
scripts
security
sound ALSA: hda/hdmi: Add a HP device 0x8715 to force connect list 2023-01-18 11:42:01 +01:00
tools perf auxtrace: Fix address filter duplicate symbol selection 2023-01-18 11:42:01 +01:00
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README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.