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| author | Dr. Stephen Henson <steve@openssl.org> | 2011-06-22 15:23:20 +0000 |
|---|---|---|
| committer | Dr. Stephen Henson <steve@openssl.org> | 2011-06-22 15:23:20 +0000 |
| commit | 22152d6885fac98777ae1d7626a78c20b1ab4295 (patch) | |
| tree | 1245d221442443a4152093218e133190d3ef2c5e /crypto | |
| parent | 102bcbce8dcfb51b7b39c0209c810e6ee10f6cde (diff) | |
| download | openssl-new-22152d6885fac98777ae1d7626a78c20b1ab4295.tar.gz | |
PR: 2540
Submitted by: emmanuel.azencot@bull.net
Reviewed by: steve
Prevent infinite loop in BN_GF2m_mod_inv().
Diffstat (limited to 'crypto')
| -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 ae642ccb39..5d90f1e88b 100644 --- a/crypto/bn/bn_gf2m.c +++ b/crypto/bn/bn_gf2m.c @@ -607,6 +607,7 @@ 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)) { |