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Fix leak when mp_int = 0 in integer.c

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This commit is contained in:
Juliusz Sosinowicz
2021-12-07 12:46:24 +01:00
parent 96b8b11fba
commit 574d171357
1 changed files with 7 additions and 1 deletions
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8
wolfcrypt/src/integer.c
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@ -183,7 +183,13 @@ void mp_clear (mp_int * a)
return;
/* only do anything if a hasn't been freed previously */
if (a->dp != NULL) {
#ifndef HAVE_WOLF_BIGINT
/* When HAVE_WOLF_BIGINT then mp_free -> wc_bigint_free needs to be called
* because a->raw->buf may be allocated even when a->dp == NULL. This is the
* case for when a zero is loaded into the mp_int. */
if (a->dp != NULL)
#endif
{
/* first zero the digits */
for (i = 0; i < a->used; i++) {
a->dp[i] = 0;