diff options
author | Dr. Stephen Henson <steve@openssl.org> | 2011-06-22 15:24:05 +0000 |
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committer | Dr. Stephen Henson <steve@openssl.org> | 2011-06-22 15:24:05 +0000 |
commit | 8038e7e44c6060398f0793e3e16db0ad1ee95b9d (patch) | |
tree | 03d51fa30cf82f2a4414e657eb8ccee4bd6606ac | |
parent | b507284c7ece6a1ad7eb6eeecc11e6d7672d03a6 (diff) |
PR: 2540
Submitted by: emmanuel.azencot@bull.net
Reviewed by: steve
Prevent infinite loop in BN_GF2m_mod_inv().
-rw-r--r-- | crypto/bn/bn_gf2m.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/crypto/bn/bn_gf2m.c b/crypto/bn/bn_gf2m.c index 19a101bccd..d0e03f87da 100644 --- a/crypto/bn/bn_gf2m.c +++ b/crypto/bn/bn_gf2m.c @@ -548,6 +548,7 @@ int BN_GF2m_mod_inv(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, BN_CTX *ctx) { while (!BN_is_odd(u)) { + if (BN_is_zero(u)) goto err; if (!BN_rshift1(u, u)) goto err; if (BN_is_odd(b)) { |