From 78004e9a87f240df03e2f73120d291763c32e0a7 Mon Sep 17 00:00:00 2001 From: Ali Ahmet Memis Date: Fri, 21 Aug 2026 01:45:27 +0000 Subject: openrisc: fix arbitrary kernel memory access via or1k_atomic syscall sys_or1k_atomic() (syscall 244 in the "or1k" ABI) takes two user pointers, v1 and v2, and swaps the words they point to in hand-written assembly. l.lwz r29,0(r4) l.lwz r27,0(r5) l.sw 0(r4),r27 l.sw 0(r5),r29 The pointers are not checked with access_ok(). The four memory accesses also have no exception table entries. A caller passes a kernel address as either pointer, and the syscall reads from and writes to it directly. This gives an unprivileged process a kernel read/write primitive. It overwrites kernel data such as the sys_call_table, gaining code execution in kernel context. Check both pointers before entering the critical section. Add fixups for the four memory accesses so faults on valid but unmapped user addresses return -EFAULT. [shorne@gmail.com: fix comment style] Fixes: 9d02a4283e9c ("OpenRISC: Boot code") Cc: stable@vger.kernel.org Signed-off-by: Ali Ahmet Memis Signed-off-by: Stafford Horne --- sound/usb/Makefile | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 sound/usb/Makefile (limited to 'sound/usb/Makefile') diff --git a/sound/usb/Makefile b/sound/usb/Makefile new file mode 100644 index 000000000..e62794a87 --- /dev/null +++ b/sound/usb/Makefile @@ -0,0 +1,39 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for ALSA +# + +snd-usb-audio-y := card.o \ + clock.o \ + endpoint.o \ + fcp.o \ + format.o \ + helper.o \ + implicit.o \ + mixer.o \ + mixer_quirks.o \ + mixer_scarlett.o \ + mixer_scarlett2.o \ + mixer_us16x08.o \ + mixer_s1810c.o \ + pcm.o \ + power.o \ + proc.o \ + quirks.o \ + stream.o \ + validate.o + +snd-usb-audio-$(CONFIG_SND_USB_AUDIO_MIDI_V2) += midi2.o +snd-usb-audio-$(CONFIG_SND_USB_AUDIO_USE_MEDIA_CONTROLLER) += media.o + +snd-usbmidi-lib-y := midi.o + +# Toplevel Module Dependency +obj-$(CONFIG_SND_USB_AUDIO) += snd-usb-audio.o snd-usbmidi-lib.o + +obj-$(CONFIG_SND_USB_UA101) += snd-usbmidi-lib.o +obj-$(CONFIG_SND_USB_USX2Y) += snd-usbmidi-lib.o +obj-$(CONFIG_SND_USB_US122L) += snd-usbmidi-lib.o + +obj-$(CONFIG_SND) += misc/ usx2y/ caiaq/ 6fire/ hiface/ bcd2000/ qcom/ +obj-$(CONFIG_SND_USB_LINE6) += line6/ -- cgit v1.3.1