CMS: Fix NULL access if d2i_CMS_bio() is not passed a CMS_ContentInfo**.

Fixes #13624

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13668)

1 files changed, 3 insertions, 2 deletions

diff --git a/crypto/cms/cms_ess.c b/crypto/cms/cms_ess.c
index ba05d4695c..9b02bb4363 100644
--- a/crypto/cms/cms_ess.c
+++ b/crypto/cms/cms_ess.c
@@ -219,8 +219,9 @@ static int cms_msgSigDigest(CMS_SignerInfo *si,
     if (md == NULL)
         return 0;
     if (!asn1_item_digest_ex(ASN1_ITEM_rptr(CMS_Attributes_Verify), md,
-                             si->signedAttrs, dig, diglen, si->cms_ctx->libctx,
-                             si->cms_ctx->propq))
+                             si->signedAttrs, dig, diglen,
+                             cms_ctx_get0_libctx(si->cms_ctx),
+                             cms_ctx_get0_propq(si->cms_ctx)))
         return 0;
     return 1;
 }