Commit cc27bec2 authored by Matt Caswell's avatar Matt Caswell
Browse files

Fix error handling in bn_exp 



In the event of an error |rr| could be NULL. Therefore don't assume you can
use |rr| in the error handling code.

Reviewed-by: default avatarAndy Polyakov <appro@openssl.org>
(cherry picked from commit 8c5a7b33)
parent f5ee5213

crypto/bn/bn_exp.c

+2 −2
Original line number Diff line number Diff line
@@ -168,10 +168,10 @@ int BN_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, BN_CTX *ctx) 
                goto err;

        }

    }

    ret = 1;

 err:

    if (r != rr)

        BN_copy(r, rr);

    ret = 1;

 err:

    BN_CTX_end(ctx);

    bn_check_top(r);

    return (ret);