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Fix export of provided EC keys

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The exporter freed a buffer too soon, and there were attempts to use
its data later, which was overwritten by something else at that
point.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11358)
This commit is contained in:
Richard Levitte 2020-03-23 13:19:40 +01:00
parent c2041da8c1
commit e3be0f4389
1 changed files with 2 additions and 5 deletions
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7
providers/implementations/keymgmt/ec_kmgmt.c
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@ -352,13 +352,10 @@ int ec_export(void *keydata, int selection, OSSL_CALLBACK *param_cb,
if ((selection & OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS) != 0)
ok = ok && otherparams_to_params(ec, tmpl, NULL);
if (!ok
|| (params = OSSL_PARAM_BLD_to_param(tmpl)) == NULL)
goto err;
if (ok && (params = OSSL_PARAM_BLD_to_param(tmpl)) != NULL)
ok = param_cb(params, cbarg);
ok = param_cb(params, cbarg);
OSSL_PARAM_BLD_free_params(params);
err:
OSSL_PARAM_BLD_free(tmpl);
OPENSSL_free(pub_key);
return ok;