Dave Jones 501e89d3ae x25: Fix NULL dereference in x25_recvmsg ... commit cb101ed2 in 3.0 introduced a bug in x25_recvmsg() When passed bogus junk from userspace, x25->neighbour can be NULL, as shown in this oops.. BUG: unable to handle kernel NULL pointer dereference at 000000000000001c IP: [<ffffffffa05482bd>] x25_recvmsg+0x4d/0x280 [x25] PGD 1015f3067 PUD 105072067 PMD 0 Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC CPU 0 Pid: 27928, comm: iknowthis Not tainted 3.1.0+ #2 Gigabyte Technology Co., Ltd. GA-MA78GM-S2H/GA-MA78GM-S2H RIP: 0010:[<ffffffffa05482bd>] [<ffffffffa05482bd>] x25_recvmsg+0x4d/0x280 [x25] RSP: 0018:ffff88010c0b7cc8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff88010c0b7d78 RCX: 0000000000000c02 RDX: ffff88010c0b7d78 RSI: ffff88011c93dc00 RDI: ffff880103f667b0 RBP: ffff88010c0b7d18 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff880103f667b0 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f479ce7f700(0000) GS:ffff88012a600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 000000000000001c CR3: 000000010529e000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process iknowthis (pid: 27928, threadinfo ffff88010c0b6000, task ffff880103faa4f0) Stack: 0000000000000c02 0000000000000c02 ffff88010c0b7d18 ffffff958153cb37 ffffffff8153cb60 0000000000000c02 ffff88011c93dc00 0000000000000000 0000000000000c02 ffff88010c0b7e10 ffff88010c0b7de8 ffffffff815372c2 Call Trace: [<ffffffff8153cb60>] ? sock_update_classid+0xb0/0x180 [<ffffffff815372c2>] sock_aio_read.part.10+0x142/0x150 [<ffffffff812d6752>] ? inode_has_perm+0x62/0xa0 [<ffffffff815372fd>] sock_aio_read+0x2d/0x40 [<ffffffff811b05e2>] do_sync_read+0xd2/0x110 [<ffffffff812d3796>] ? security_file_permission+0x96/0xb0 [<ffffffff811b0a91>] ? rw_verify_area+0x61/0x100 [<ffffffff811b103d>] vfs_read+0x16d/0x180 [<ffffffff811b109d>] sys_read+0x4d/0x90 [<ffffffff81657282>] system_call_fastpath+0x16/0x1b Code: 8b 66 20 4c 8b 32 48 89 d3 48 89 4d b8 45 89 c7 c7 45 cc 95 ff ff ff 4d 85 e4 0f 84 ed 01 00 00 49 8b 84 24 18 05 00 00 4c 89 e7 78 1c 01 45 19 ed 31 f6 e8 d5 37 ff e0 41 0f b6 44 24 0e 41 Signed-off-by: Dave Jones <davej@redhat.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2011-11-02 00:49:49 -04:00
..
9p	net/9p: Convert net/9p protocol dumps to tracepoints	2011-10-24 11:13:12 -05:00
802	rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER	2011-08-02 04:29:23 -07:00
8021q	vlan: Don't propagate flag changes on down interfaces.	2011-11-01 17:51:03 -04:00
appletalk	net: add skb frag size accessors	2011-10-19 03:10:46 -04:00
atm	Merge branch 'master' of github.com:davem330/net	2011-09-22 03:23:13 -04:00
ax25
batman-adv	Merge branch 'batman-adv/maint' of git://git.open-mesh.org/linux-merge	2011-10-30 03:05:07 -04:00
bluetooth	Merge branch 'master' of ra.kernel.org:/pub/scm/linux/kernel/git/davem/net	2011-10-24 18:18:09 -04:00
bridge	netfilter: Remove unnecessary OOM logging messages	2011-11-01 09:19:49 +01:00
caif	caif: Fix BUG() with network namespaces	2011-10-25 19:22:23 -04:00
can	can: remove references to berlios mailinglist	2011-10-17 19:22:46 -04:00
ceph	libceph: force resend of osd requests if we skip an osdmap	2011-10-25 16:10:17 -07:00
core	neigh: Kill bogus SMP protected debugging message.	2011-11-01 17:45:55 -04:00
dcb	dcb: add DCBX mode to event notifier attributes	2011-10-06 15:49:51 -04:00
dccp	ipv6: tcp: fix TCLASS value in ACK messages sent from TIME_WAIT	2011-10-27 00:44:35 -04:00
decnet	rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER	2011-08-02 04:29:23 -07:00
dns_resolver
dsa	net: remove use of ndo_set_multicast_list in drivers	2011-08-17 20:22:03 -07:00
econet
ethernet	net: don't clear IFF_XMIT_DST_RELEASE in ether_setup	2011-09-15 14:49:44 -04:00
ieee802154	6LoWPAN: fix skb_copy call	2011-09-15 15:36:35 -04:00
ipv4	net: make the tcp and udp file_operations for the /proc stuff const	2011-11-01 17:56:14 -04:00
ipv6	net: make the tcp and udp file_operations for the /proc stuff const	2011-11-01 17:56:14 -04:00
ipx
irda	Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty	2011-10-26 15:11:09 +02:00
iucv	net: more accurate skb truesize	2011-10-13 16:05:07 -04:00
key
l2tp	Merge branch 'master' of ra.kernel.org:/pub/scm/linux/kernel/git/davem/net	2011-10-24 18:18:09 -04:00
lapb	wan: make LAPB callbacks const	2011-09-16 19:20:20 -04:00
llc
mac80211	Merge branch 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm	2011-10-25 15:18:39 +02:00
netfilter	netfilter: do not propagate nf_queue errors in nf_hook_slow	2011-11-01 09:57:21 +01:00
netlabel	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net	2011-08-20 10:39:12 -07:00
netlink	af_unix: dont send SCM_CREDENTIALS by default	2011-09-28 13:29:50 -04:00
netrom
nfc	treewide: use __printf not __attribute__((format(printf,...)))	2011-10-31 17:30:54 -07:00
packet	macvlan: handle fragmented multicast frames	2011-10-18 23:22:07 -04:00
phonet	rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER	2011-08-02 04:29:23 -07:00
rds	treewide: use __printf not __attribute__((format(printf,...)))	2011-10-31 17:30:54 -07:00
rfkill	net:rfkill: add a gpio setup function into GPIO rfkill	2011-10-03 15:19:19 -04:00
rose
rxrpc
sched	net_sched: cls_flow: use skb_header_pointer()	2011-10-24 18:40:14 -04:00
sctp	ipv6: tcp: fix TCLASS value in ACK messages sent from TIME_WAIT	2011-10-27 00:44:35 -04:00
sunrpc	treewide: use __printf not __attribute__((format(printf,...)))	2011-10-31 17:30:54 -07:00
tipc	tipc: Remove unused link event tracking code	2011-09-17 22:55:15 -04:00
unix	af_unix: dont send SCM_CREDENTIALS by default	2011-09-28 13:29:50 -04:00
wanrouter
wimax
wireless	nl80211: Add sta_flags to the station info	2011-10-14 14:48:23 -04:00
x25	x25: Fix NULL dereference in x25_recvmsg	2011-11-02 00:49:49 -04:00
xfrm	net: add skb frag size accessors	2011-10-19 03:10:46 -04:00
compat.c
Kconfig
Makefile
nonet.c
socket.c	Merge branch 'master' of github.com:davem330/net	2011-09-22 03:23:13 -04:00
sysctl_net.c