diff options
Diffstat (limited to 'crypto/ex_data.c')
| -rw-r--r-- | crypto/ex_data.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/crypto/ex_data.c b/crypto/ex_data.c index 108a1959ea..723b21b3d2 100644 --- a/crypto/ex_data.c +++ b/crypto/ex_data.c @@ -473,7 +473,14 @@ static int int_dup_ex_data(int class_index, CRYPTO_EX_DATA *to, if (j < mx) mx = j; if (mx > 0) { - if (!CRYPTO_set_ex_data(to, mx - 1, NULL)) + /* + * Make sure the ex_data stack is at least |mx| elements long to avoid + * issues in the for loop that follows; so go get the |mx|'th element + * (if it does not exist CRYPTO_get_ex_data() returns NULL), and assign + * to itself. This is normally a no-op; but ensures the stack is the + * proper size + */ + if (!CRYPTO_set_ex_data(to, mx - 1, CRYPTO_get_ex_data(to, mx - 1))) goto skip; storage = OPENSSL_malloc(mx * sizeof(CRYPTO_EX_DATA_FUNCS *)); if (!storage) |