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 --- net/bluetooth/Makefile | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 net/bluetooth/Makefile (limited to 'net/bluetooth/Makefile') diff --git a/net/bluetooth/Makefile b/net/bluetooth/Makefile new file mode 100644 index 000000000..41049b280 --- /dev/null +++ b/net/bluetooth/Makefile @@ -0,0 +1,27 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the Linux Bluetooth subsystem. +# + +obj-$(CONFIG_BT) += bluetooth.o +obj-$(CONFIG_BT_RFCOMM) += rfcomm/ +obj-$(CONFIG_BT_BNEP) += bnep/ +obj-$(CONFIG_BT_HIDP) += hidp/ +obj-$(CONFIG_BT_6LOWPAN) += bluetooth_6lowpan.o + +bluetooth_6lowpan-y := 6lowpan.o + +bluetooth-y := af_bluetooth.o hci_core.o hci_conn.o hci_event.o mgmt.o \ + hci_sock.o hci_sysfs.o l2cap_core.o l2cap_sock.o smp.o lib.o \ + ecdh_helper.o mgmt_util.o mgmt_config.o hci_codec.o eir.o hci_sync.o \ + hci_drv.o + +bluetooth-$(CONFIG_DEV_COREDUMP) += coredump.o + +bluetooth-$(CONFIG_BT_BREDR) += sco.o +bluetooth-$(CONFIG_BT_LE) += iso.o +bluetooth-$(CONFIG_BT_LEDS) += leds.o +bluetooth-$(CONFIG_BT_MSFTEXT) += msft.o +bluetooth-$(CONFIG_BT_AOSPEXT) += aosp.o +bluetooth-$(CONFIG_BT_DEBUGFS) += hci_debugfs.o +bluetooth-$(CONFIG_BT_SELFTEST) += selftest.o -- cgit v1.3.1