diff options
author | dtucker@openbsd.org <dtucker@openbsd.org> | 2016-01-29 02:42:46 +0000 |
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committer | Damien Miller <djm@mindrot.org> | 2016-01-30 11:19:13 +1100 |
commit | c0060a65296f01d4634f274eee184c0e93ba0f23 (patch) | |
tree | ec96274d1b0ea383318f6e8608ba1d4f63e45858 | |
parent | 44cf930e670488c85c9efeb373fa5f4b455692ac (diff) | |
download | openssh-git-c0060a65296f01d4634f274eee184c0e93ba0f23.tar.gz |
upstream commit
Account for packets buffered but not yet processed when
computing whether or not it is time to perform rekeying. bz#2521, based
loosely on a patch from olo at fb.com, ok djm@
Upstream-ID: 67e268b547f990ed220f3cb70a5624d9bda12b8c
-rw-r--r-- | packet.c | 11 |
1 files changed, 8 insertions, 3 deletions
@@ -1,4 +1,4 @@ -/* $OpenBSD: packet.c,v 1.222 2016/01/14 16:17:40 markus Exp $ */ +/* $OpenBSD: packet.c,v 1.223 2016/01/29 02:42:46 dtucker Exp $ */ /* * Author: Tatu Ylonen <ylo@cs.hut.fi> * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland @@ -2251,16 +2251,21 @@ int ssh_packet_need_rekeying(struct ssh *ssh) { struct session_state *state = ssh->state; + u_int32_t buf_in, buf_out; if (ssh->compat & SSH_BUG_NOREKEY) return 0; + buf_in = roundup(sshbuf_len(state->input), + state->newkeys[MODE_IN]->enc.block_size); + buf_out = roundup(sshbuf_len(state->output), + state->newkeys[MODE_OUT]->enc.block_size); return (state->p_send.packets > MAX_PACKETS) || (state->p_read.packets > MAX_PACKETS) || (state->max_blocks_out && - (state->p_send.blocks > state->max_blocks_out)) || + (state->p_send.blocks + buf_out > state->max_blocks_out)) || (state->max_blocks_in && - (state->p_read.blocks > state->max_blocks_in)) || + (state->p_read.blocks + buf_in > state->max_blocks_in)) || (state->rekey_interval != 0 && state->rekey_time + state->rekey_interval <= monotime()); } |