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-rw-r--r--crypto/bn/bn_gf2m.c9
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;