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Fix CID 1463883 Dereference after null check (in ess_find_cert_v2())

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Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/12379)
This commit is contained in:
Shane Lontis 2020-07-06 16:13:48 +10:00 committed by Dmitry Belyavskiy
parent 821278a885
commit 5999d20ea8
1 changed files with 3 additions and 1 deletions
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4
crypto/ess/ess_lib.c
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@ -339,7 +339,9 @@ int ess_find_cert_v2(const STACK_OF(ESS_CERT_ID_V2) *cert_ids, const X509 *cert)
const ESS_CERT_ID_V2 *cid = sk_ESS_CERT_ID_V2_value(cert_ids, i);
const EVP_MD *md;
if (cid != NULL && cid->hash_alg != NULL)
if (cid == NULL)
return -1;
if (cid->hash_alg != NULL)
md = EVP_get_digestbyobj(cid->hash_alg->algorithm);
else
md = EVP_sha256();