The branch master has been updated
via 94b3664a528258df5ebcaae213d19bf6568cc47d (commit)
from a528d4f0a9a71405f3ca06e20cbd27aa1b8c0df9 (commit)
- Log -----------------------------------------------------------------
commit 94b3664a528258df5ebcaae213d19bf6568cc47d
Author: Pascal Cuoq <[email protected]>
Date: Mon Oct 12 12:19:19 2015 +0200
BN_GF2m_mod_inv(): check bn_wexpand return value
Signed-off-by: Kurt Roeckx <[email protected]>
Reviewed-by: Rich Salz <[email protected]>
MR #1276, RT #4107
-----------------------------------------------------------------------
Summary of changes:
crypto/bn/bn_gf2m.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/crypto/bn/bn_gf2m.c b/crypto/bn/bn_gf2m.c
index 3b6c883..11d00c6 100644
--- a/crypto/bn/bn_gf2m.c
+++ b/crypto/bn/bn_gf2m.c
@@ -697,18 +697,21 @@ int BN_GF2m_mod_inv(BIGNUM *r, const BIGNUM *a, const
BIGNUM *p, BN_CTX *ctx)
int 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;
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