diff options
| author | Ali Ahmet Memis <ali@iusegentoo.com> | 2026-08-21 01:45:27 +0000 |
|---|---|---|
| committer | Stafford Horne <shorne@gmail.com> | 2026-08-29 07:32:26 +0100 |
| commit | 78004e9a87f240df03e2f73120d291763c32e0a7 (patch) | |
| tree | 137c22dd795222931b9d2bf2501d37cd766741aa /drivers/net/wireless/Makefile | |
| download | linux-stable-78004e9a87f240df03e2f73120d291763c32e0a7.tar.gz linux-stable-78004e9a87f240df03e2f73120d291763c32e0a7.zip | |
openrisc: fix arbitrary kernel memory access via or1k_atomic syscallgrafted
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 <ali@iusegentoo.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
Diffstat (limited to 'drivers/net/wireless/Makefile')
| -rw-r--r-- | drivers/net/wireless/Makefile | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/net/wireless/Makefile b/drivers/net/wireless/Makefile new file mode 100644 index 000000000..e1c4141c6 --- /dev/null +++ b/drivers/net/wireless/Makefile @@ -0,0 +1,25 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the Linux Wireless network device drivers. +# + +obj-$(CONFIG_WLAN_VENDOR_ADMTEK) += admtek/ +obj-$(CONFIG_WLAN_VENDOR_ATH) += ath/ +obj-$(CONFIG_WLAN_VENDOR_ATMEL) += atmel/ +obj-$(CONFIG_WLAN_VENDOR_BROADCOM) += broadcom/ +obj-$(CONFIG_WLAN_VENDOR_INTEL) += intel/ +obj-$(CONFIG_WLAN_VENDOR_INTERSIL) += intersil/ +obj-$(CONFIG_WLAN_VENDOR_MARVELL) += marvell/ +obj-$(CONFIG_WLAN_VENDOR_MEDIATEK) += mediatek/ +obj-$(CONFIG_WLAN_VENDOR_MICROCHIP) += microchip/ +obj-$(CONFIG_WLAN_VENDOR_PURELIFI) += purelifi/ +obj-$(CONFIG_WLAN_VENDOR_QUANTENNA) += quantenna/ +obj-$(CONFIG_WLAN_VENDOR_RALINK) += ralink/ +obj-$(CONFIG_WLAN_VENDOR_REALTEK) += realtek/ +obj-$(CONFIG_WLAN_VENDOR_RSI) += rsi/ +obj-$(CONFIG_WLAN_VENDOR_SILABS) += silabs/ +obj-$(CONFIG_WLAN_VENDOR_ST) += st/ +obj-$(CONFIG_WLAN_VENDOR_TI) += ti/ +obj-$(CONFIG_WLAN_VENDOR_ZYDAS) += zydas/ + +obj-$(CONFIG_WLAN) += virtual/ |