diff options
| author | Pascal Cuoq <cuoq@trust-in-soft.com> | 2015-10-12 12:19:19 +0200 |
|---|---|---|
| committer | Kurt Roeckx <kurt@roeckx.be> | 2015-10-29 20:34:24 +0100 |
| commit | 94b3664a528258df5ebcaae213d19bf6568cc47d (patch) | |
| tree | 13a2c587d04558655d8966683041342e3cd472de /crypto/bn/bn_gf2m.c | |
| parent | a528d4f0a9a71405f3ca06e20cbd27aa1b8c0df9 (diff) | |
BN_GF2m_mod_inv(): check bn_wexpand return value
Signed-off-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Rich Salz <rsalz@akamai.com>
MR #1276, RT #4107
Diffstat (limited to 'crypto/bn/bn_gf2m.c')
| -rw-r--r-- | crypto/bn/bn_gf2m.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/crypto/bn/bn_gf2m.c b/crypto/bn/bn_gf2m.c index 3b6c883c04..11d00c6cda 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; |