Sean Tranchetti 3fcb04cc1d 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 becaus: kasan: bad access detected [ 140.597981] page_owner info is not active (free page?) [ 140.603267] [ 140.653503] ================================================================ Change-Id: I5d2fa78a9d950c79d83d759bfd4d0f399fed18a4 Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>		2019-09-28 20:28:33 +02:00
..
Kconfig
Makefile
xfrm_algo.c	ANDROID: make PF_KEY SHA256 use RFC-compliant truncation.	2019-07-27 21:49:54 +02:00
xfrm_hash.c
xfrm_hash.h
xfrm_input.c	xfrm: Use __skb_queue_tail in xfrm_trans_queue	2019-07-27 21:46:26 +02:00
xfrm_ipcomp.c
xfrm_output.c	BACKPORT: net: xfrm: support setting an output mark.	2019-07-27 21:51:33 +02:00
xfrm_policy.c	xfrm: Fix stack-out-of-bounds read on socket policy lookup.	2019-08-30 01:29:11 +02:00
xfrm_proc.c
xfrm_replay.c
xfrm_state.c	xfrm: Fix bucket count reported to userspace	2019-07-27 22:08:35 +02:00
xfrm_sysctl.c
xfrm_user.c	xfrm: validate template mode	2019-09-28 20:28:33 +02:00