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upstream: fix memory leak of ciphercontext when rekeying; bz#2942 

Patch from Markus Schmidt; ok markus@

OpenBSD-Commit-ID: 7877f1b82e249986f1ef98d0ae76ce987d332bdd
This commit is contained in:
djm@openbsd.org 2019-01-04 03:23:00 +00:00 committed by Damien Miller
parent 5bed70afce
commit 8a8183474c
1 changed files with 3 additions and 3 deletions
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6
packet.c
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@ -1,4 +1,4 @@
/* $OpenBSD: packet.c,v 1.278 2018/12/27 03:25:25 djm Exp $ */
/* $OpenBSD: packet.c,v 1.279 2019/01/04 03:23:00 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -862,8 +862,6 @@ ssh_set_newkeys(struct ssh *ssh, int mode)
(unsigned long long)state->p_read.blocks,
(unsigned long long)state->p_send.bytes,
(unsigned long long)state->p_send.blocks);
cipher_free(*ccp);
*ccp = NULL;
kex_free_newkeys(state->newkeys[mode]);
state->newkeys[mode] = NULL;
}
@ -882,6 +880,8 @@ ssh_set_newkeys(struct ssh *ssh, int mode)
}
mac->enabled = 1;
DBG(debug("cipher_init_context: %d", mode));
cipher_free(*ccp);
*ccp = NULL;
if ((r = cipher_init(ccp, enc->cipher, enc->key, enc->key_len,
enc->iv, enc->iv_len, crypt_type)) != 0)
return r;