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 --- drivers/soundwire/Kconfig | 63 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 drivers/soundwire/Kconfig (limited to 'drivers/soundwire/Kconfig') diff --git a/drivers/soundwire/Kconfig b/drivers/soundwire/Kconfig new file mode 100644 index 000000000..196a7daaa --- /dev/null +++ b/drivers/soundwire/Kconfig @@ -0,0 +1,63 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# SoundWire subsystem configuration +# + +menuconfig SOUNDWIRE + tristate "SoundWire support" + depends on ACPI || OF + depends on SND_SOC_SDCA_OPTIONAL + help + SoundWire is a 2-Pin interface with data and clock line ratified + by the MIPI Alliance. SoundWire is used for transporting data + typically related to audio functions. SoundWire interface is + optimized to integrate audio devices in mobile or mobile inspired + systems. Say Y to enable this subsystem, N if you do not have such + a device + +if SOUNDWIRE + +comment "SoundWire Devices" + +config SOUNDWIRE_AMD + tristate "AMD SoundWire Manager driver" + select SOUNDWIRE_GENERIC_ALLOCATION + depends on ACPI && SND_SOC + help + SoundWire AMD Manager driver. + If you have an AMD platform which has a SoundWire Manager then + enable this config option to get the SoundWire support for that + device. + +config SOUNDWIRE_CADENCE + tristate + select CRC8 + +config SOUNDWIRE_INTEL + tristate "Intel SoundWire Master driver" + select SOUNDWIRE_CADENCE + select SOUNDWIRE_GENERIC_ALLOCATION + select AUXILIARY_BUS + depends on ACPI && SND_SOC + depends on SND_SOC_SOF_HDA_MLINK || !SND_SOC_SOF_HDA_MLINK + depends on SND_HDA_CORE || !SND_HDA_ALIGNED_MMIO + help + SoundWire Intel Master driver. + If you have an Intel platform which has a SoundWire Master then + enable this config option to get the SoundWire support for that + device. + +config SOUNDWIRE_QCOM + tristate "Qualcomm SoundWire Master driver" + imply SLIMBUS + depends on SND_SOC + help + SoundWire Qualcomm Master driver. + If you have an Qualcomm platform which has a SoundWire Master then + enable this config option to get the SoundWire support for that + device + +config SOUNDWIRE_GENERIC_ALLOCATION + tristate + +endif -- cgit v1.3.1