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/hda/codecs/Makefile | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 sound/hda/codecs/Makefile (limited to 'sound/hda/codecs/Makefile') diff --git a/sound/hda/codecs/Makefile b/sound/hda/codecs/Makefile new file mode 100644 index 000000000..88d2f8a79 --- /dev/null +++ b/sound/hda/codecs/Makefile @@ -0,0 +1,32 @@ +# SPDX-License-Identifier: GPL-2.0 +subdir-ccflags-y += -I$(src)/../common + +snd-hda-codec-generic-y := generic.o +snd-hda-codec-cmedia-y := cmedia.o +snd-hda-codec-cm9825-y := cm9825.o +snd-hda-codec-analog-y := analog.o +snd-hda-codec-ca0110-y := ca0110.o +snd-hda-codec-ca0132-y := ca0132.o +snd-hda-codec-conexant-y := conexant.o +snd-hda-codec-idt-y := sigmatel.o +snd-hda-codec-senarytech-y := senarytech.o +snd-hda-codec-si3054-y := si3054.o +snd-hda-codec-via-y := via.o + +obj-y += cirrus/ +obj-y += hdmi/ +obj-y += realtek/ +obj-y += side-codecs/ + +# codec drivers +obj-$(CONFIG_SND_HDA_GENERIC) += snd-hda-codec-generic.o +obj-$(CONFIG_SND_HDA_CODEC_CMEDIA) += snd-hda-codec-cmedia.o +obj-$(CONFIG_SND_HDA_CODEC_CM9825) += snd-hda-codec-cm9825.o +obj-$(CONFIG_SND_HDA_CODEC_ANALOG) += snd-hda-codec-analog.o +obj-$(CONFIG_SND_HDA_CODEC_CA0110) += snd-hda-codec-ca0110.o +obj-$(CONFIG_SND_HDA_CODEC_CA0132) += snd-hda-codec-ca0132.o +obj-$(CONFIG_SND_HDA_CODEC_CONEXANT) += snd-hda-codec-conexant.o +obj-$(CONFIG_SND_HDA_CODEC_SIGMATEL) += snd-hda-codec-idt.o +obj-$(CONFIG_SND_HDA_CODEC_SENARYTECH) += snd-hda-codec-senarytech.o +obj-$(CONFIG_SND_HDA_CODEC_SI3054) += snd-hda-codec-si3054.o +obj-$(CONFIG_SND_HDA_CODEC_VIA) += snd-hda-codec-via.o -- cgit v1.3.1