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| 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 /net/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 'net/Makefile')
| -rw-r--r-- | net/Makefile | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/net/Makefile b/net/Makefile new file mode 100644 index 000000000..5b2dd7f07 --- /dev/null +++ b/net/Makefile @@ -0,0 +1,77 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the linux networking. +# +# 2 Sep 2000, Christoph Hellwig <hch@infradead.org> +# Rewritten to use lists instead of if-statements. +# + +obj-y := devres.o socket.o core/ + +obj-$(CONFIG_COMPAT) += compat.o + +# LLC has to be linked before the files in net/802/ +obj-$(CONFIG_LLC) += llc/ +obj-y += ethernet/ 802/ sched/ netlink/ bpf/ ethtool/ +obj-$(CONFIG_NETFILTER) += netfilter/ +obj-$(CONFIG_INET) += ipv4/ +obj-$(CONFIG_TLS) += tls/ +obj-$(CONFIG_XFRM) += xfrm/ +obj-$(CONFIG_UNIX) += unix/ +obj-$(CONFIG_INET_PSP) += psp/ +obj-y += ipv6/ +obj-$(CONFIG_PACKET) += packet/ +obj-$(CONFIG_NET_KEY) += key/ +obj-$(CONFIG_BRIDGE) += bridge/ +obj-$(CONFIG_NET_DEVLINK) += devlink/ +obj-y += dsa/ +obj-$(CONFIG_X25) += x25/ +obj-$(CONFIG_LAPB) += lapb/ +obj-$(CONFIG_CAN) += can/ +obj-$(CONFIG_BT) += bluetooth/ +obj-$(CONFIG_SUNRPC) += sunrpc/ +obj-$(CONFIG_AF_RXRPC) += rxrpc/ +obj-$(CONFIG_AF_KCM) += kcm/ +obj-$(CONFIG_STREAM_PARSER) += strparser/ +obj-$(CONFIG_ATM) += atm/ +obj-$(CONFIG_L2TP) += l2tp/ +obj-$(CONFIG_PHONET) += phonet/ +ifneq ($(CONFIG_VLAN_8021Q),) +obj-y += 8021q/ +endif +obj-$(CONFIG_IP_SCTP) += sctp/ +obj-$(CONFIG_RDS) += rds/ +obj-$(CONFIG_WIRELESS) += wireless/ +obj-$(CONFIG_MAC80211) += mac80211/ +obj-$(CONFIG_TIPC) += tipc/ +obj-$(CONFIG_NETLABEL) += netlabel/ +obj-$(CONFIG_IUCV) += iucv/ +obj-$(CONFIG_SMC) += smc/ +obj-$(CONFIG_RFKILL) += rfkill/ +obj-$(CONFIG_NET_9P) += 9p/ +obj-$(CONFIG_DCB) += dcb/ +obj-$(CONFIG_6LOWPAN) += 6lowpan/ +obj-$(CONFIG_IEEE802154) += ieee802154/ +obj-$(CONFIG_MAC802154) += mac802154/ + +obj-$(CONFIG_SYSCTL) += sysctl_net.o +obj-$(CONFIG_DNS_RESOLVER) += dns_resolver/ +obj-$(CONFIG_CEPH_LIB) += ceph/ +obj-$(CONFIG_BATMAN_ADV) += batman-adv/ +obj-$(CONFIG_NFC) += nfc/ +obj-$(CONFIG_PSAMPLE) += psample/ +obj-$(CONFIG_NET_IFE) += ife/ +obj-$(CONFIG_OPENVSWITCH) += openvswitch/ +obj-$(CONFIG_VSOCKETS) += vmw_vsock/ +obj-$(CONFIG_MPLS) += mpls/ +obj-$(CONFIG_NET_NSH) += nsh/ +obj-$(CONFIG_HSR) += hsr/ +obj-$(CONFIG_NET_SWITCHDEV) += switchdev/ +obj-$(CONFIG_NET_L3_MASTER_DEV) += l3mdev/ +obj-$(CONFIG_QRTR) += qrtr/ +obj-$(CONFIG_NET_NCSI) += ncsi/ +obj-$(CONFIG_XDP_SOCKETS) += xdp/ +obj-$(CONFIG_MPTCP) += mptcp/ +obj-$(CONFIG_MCTP) += mctp/ +obj-$(CONFIG_NET_HANDSHAKE) += handshake/ +obj-$(CONFIG_NET_SHAPER) += shaper/ |