diff options
| author | Brent Cook <bcook@cvs.openbsd.org> | 2016-03-12 21:44:12 +0000 |
|---|---|---|
| committer | Brent Cook <bcook@cvs.openbsd.org> | 2016-03-12 21:44:12 +0000 |
| commit | da5942f11c556b822debe8132cce4c556791f8c4 (patch) | |
| tree | f656270d4511949fccb35622f1648fa48ac3d3a8 /lib/libcrypto/bn | |
| parent | b79ee23e66b1285c71ac7b0db7df12fa6700e5d9 (diff) | |
Add error handling to the remaining calls to bn_wexpand().
Noticed by pascal-cuoq from Github:
https://github.com/libressl-portable/openbsd/issues/56
ok beck@
Diffstat (limited to 'lib/libcrypto/bn')
| -rw-r--r-- | lib/libcrypto/bn/bn_gf2m.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/lib/libcrypto/bn/bn_gf2m.c b/lib/libcrypto/bn/bn_gf2m.c index 40c1a942200..d83ae291ec9 100644 --- a/lib/libcrypto/bn/bn_gf2m.c +++ b/lib/libcrypto/bn/bn_gf2m.c @@ -1,4 +1,4 @@ -/* $OpenBSD: bn_gf2m.c,v 1.20 2015/06/11 15:55:28 jsing Exp $ */ +/* $OpenBSD: bn_gf2m.c,v 1.21 2016/03/12 21:44:11 bcook Exp $ */ /* ==================================================================== * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. * @@ -702,18 +702,21 @@ BN_GF2m_mod_inv(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, BN_CTX *ctx) top = p->top; BN_ULONG *udp, *bdp, *vdp, *cdp; - bn_wexpand(u, top); + if (!bn_wexpand(u, top)) + goto err; udp = u->d; for (i = u->top; i < top; i++) udp[i] = 0; u->top = top; - bn_wexpand(b, top); + if (!bn_wexpand(b, top)) + goto err; bdp = b->d; bdp[0] = 1; for (i = 1; i < top; i++) bdp[i] = 0; b->top = top; - bn_wexpand(c, top); + if (!bn_wexpand(c, top)) + goto err; cdp = c->d; for (i = 0; i < top; i++) cdp[i] = 0; |