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Merge pull request #10346 from Frauschi/ecc_leak_fix

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Prevent ECC tmp key leak and UB
This commit is contained in:
David Garske
2026-05-05 11:32:48 -07:00
committed by GitHub
parent 7e9635df19 0dd6aa3704
commit 04984a5d5e
1 changed files with 3 additions and 3 deletions
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wolfcrypt/src/ecc.c
+3 -3
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@@ -3733,7 +3733,7 @@ int wc_ecc_mulmod_ex(const mp_int* k, ecc_point *G, ecc_point *R, mp_int* a,
#endif
int i, err;
#ifdef WOLFSSL_SMALL_STACK_CACHE
ecc_key *key = (ecc_key *)XMALLOC(sizeof(*key), heap, DYNAMIC_TYPE_ECC);
ecc_key *key = NULL;
#endif
mp_digit mp;
@@ -3753,6 +3753,7 @@ int wc_ecc_mulmod_ex(const mp_int* k, ecc_point *G, ecc_point *R, mp_int* a,
}
#ifdef WOLFSSL_SMALL_STACK_CACHE
key = (ecc_key *)XMALLOC(sizeof(*key), heap, DYNAMIC_TYPE_ECC);
if (key == NULL) {
err = MP_MEM;
goto exit;
@@ -3815,8 +3816,7 @@ exit:
if (key) {
if (R)
R->key = NULL;
if (err == MP_OKAY)
ecc_key_tmp_final(key, heap);
ecc_key_tmp_final(key, heap);
XFREE(key, heap, DYNAMIC_TYPE_ECC);
}
#endif /* WOLFSSL_SMALL_STACK_CACHE */