Sean Tranchetti 32bf94fb5c xfrm: validate template mode ... XFRM mode parameters passed as part of the user templates in the IP_XFRM_POLICY are never properly validated. Passing values other than valid XFRM modes can cause stack-out-of-bounds reads to occur later in the XFRM processing: [ 140.535608] ================================================================ [ 140.543058] BUG: KASAN: stack-out-of-bounds in xfrm_state_find+0x17e4/0x1cc4 [ 140.550306] Read of size 4 at addr ffffffc0238a7a58 by task repro/5148 [ 140.557369] [ 140.558927] Call trace: [ 140.558936] dump_backtrace+0x0/0x388 [ 140.558940] show_stack+0x24/0x30 [ 140.558946] __dump_stack+0x24/0x2c [ 140.558949] dump_stack+0x8c/0xd0 [ 140.558956] print_address_description+0x74/0x234 [ 140.558960] kasan_report+0x240/0x264 [ 140.558963] __asan_report_load4_noabort+0x2c/0x38 [ 140.558967] xfrm_state_find+0x17e4/0x1cc4 [ 140.558971] xfrm_resolve_and_create_bundle+0x40c/0x1fb8 [ 140.558975] xfrm_lookup+0x238/0x1444 [ 140.558977] xfrm_lookup_route+0x48/0x11c [ 140.558984] ip_route_output_flow+0x88/0xc4 [ 140.558991] raw_sendmsg+0xa74/0x266c [ 140.558996] inet_sendmsg+0x258/0x3b0 [ 140.559002] sock_sendmsg+0xbc/0xec [ 140.559005] SyS_sendto+0x3a8/0x5a8 [ 140.559008] el0_svc_naked+0x34/0x38 [ 140.559009] [ 140.592245] page dumped because: kasan: bad access detected [ 140.597981] page_owner info is not active (free page?) [ 140.603267] [ 140.653503] ================================================================ Signed-off-by: Sean Tranchetti <stranche@codeaurora.org> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>		2018-09-20 08:30:42 +02:00
..
Kconfig	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next	2017-02-16 21:25:49 -05:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
xfrm_algo.c	xfrm: use IS_ENABLED() instead of checking for built-in or module	2016-09-10 21:19:11 -07:00
xfrm_device.c	xfrm: Register xfrm_dev_notifier in appropriate place	2018-03-30 10:59:23 -04:00
xfrm_hash.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
xfrm_hash.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
xfrm_input.c	xfrm: reset crypto_done when iterating over multiple input xfrms	2018-09-04 10:27:07 +02:00
xfrm_ipcomp.c	net: xfrm: use preempt-safe this_cpu_read() in ipcomp_alloc_tfms()	2018-03-13 07:46:37 +01:00
xfrm_output.c	xfrm: Fix NULL pointer dereference when skb_dst_force clears the dst_entry.	2018-09-11 11:28:25 +02:00
xfrm_policy.c	xfrm: Fix NULL pointer dereference when skb_dst_force clears the dst_entry.	2018-09-11 11:28:25 +02:00
xfrm_proc.c	proc: introduce proc_create_net_single	2018-05-16 07:24:30 +02:00
xfrm_replay.c	xfrm: Fix ESN sequence number handling for IPsec GSO packets.	2018-03-01 08:14:50 +01:00
xfrm_state.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-05-11 20:53:22 -04:00
xfrm_sysctl.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
xfrm_user.c	xfrm: validate template mode	2018-09-20 08:30:42 +02:00