From b862f1dd52b0f5318d67b4463be90562e57f8278 Mon Sep 17 00:00:00 2001 From: Alexander Chernavin Date: Thu, 27 May 2021 10:05:17 -0400 Subject: nat: fix crash when translate unknown proto packets Type: fix Currently, there might be a crash in NAT ED mode: * if a session for an unknown proto packet cannot be created in2out, * if a session for an unknown proto packet cannot be found out2in. With this change, translate packets only if a session is given in NAT ED mode. Signed-off-by: Alexander Chernavin Change-Id: Iafb332db1ae9a3e76435964ad636037d1b8a51e8 --- src/plugins/nat/nat44-ed/nat44_ed_in2out.c | 7 ++++--- src/plugins/nat/nat44-ed/nat44_ed_out2in.c | 2 +- 2 files changed, 5 insertions(+), 4 deletions(-) (limited to 'src/plugins/nat/nat44-ed') diff --git a/src/plugins/nat/nat44-ed/nat44_ed_in2out.c b/src/plugins/nat/nat44-ed/nat44_ed_in2out.c index 85cda76db39..f3f3ffa13b0 100644 --- a/src/plugins/nat/nat44-ed/nat44_ed_in2out.c +++ b/src/plugins/nat/nat44-ed/nat44_ed_in2out.c @@ -1329,9 +1329,10 @@ nat44_ed_in2out_slow_path_node_fn_inline (vlib_main_t *vm, if (!s0) next[0] = NAT_NEXT_DROP; - if (NAT_ED_TRNSL_ERR_SUCCESS != - (translation_error = nat_6t_flow_buf_translate ( - sm, b0, ip0, &s0->i2o, proto0, is_output_feature))) + if (NAT_NEXT_DROP != next[0] && s0 && + NAT_ED_TRNSL_ERR_SUCCESS != + (translation_error = nat_6t_flow_buf_translate ( + sm, b0, ip0, &s0->i2o, proto0, is_output_feature))) { goto trace0; } diff --git a/src/plugins/nat/nat44-ed/nat44_ed_out2in.c b/src/plugins/nat/nat44-ed/nat44_ed_out2in.c index 039d46406d1..f14311a99e1 100644 --- a/src/plugins/nat/nat44-ed/nat44_ed_out2in.c +++ b/src/plugins/nat/nat44-ed/nat44_ed_out2in.c @@ -1180,7 +1180,7 @@ nat44_ed_out2in_slow_path_node_fn_inline (vlib_main_t * vm, if (!s0) next[0] = NAT_NEXT_DROP; } - if (NAT_NEXT_DROP != next[0] && + if (NAT_NEXT_DROP != next[0] && s0 && NAT_ED_TRNSL_ERR_SUCCESS != (translation_error = nat_6t_flow_buf_translate ( sm, b0, ip0, &s0->o2i, proto0, 0 /* is_output_feature */))) -- cgit 1.2.3-korg