[openssl.org #3053] [PATCH] Check for null pointer in cms envelopedData

[Phillip Hellewell via RT]

This patch adds a check for null originatorInfo to these two functions:
1. cms_get0_certificate_choices()
2. cms_get0_revocation_choices()

Interestingly, the first one wasn't causing a problem, but only
because luckily "certificates" comes first in the structure, so it
ends up returning NULL + 0, and the calling function checks for NULL
so it handles it.  The second one however causes a seg fault because
it returns NULL+4, so then it crashes on the dereference in the
calling function (CMS_get1_crls).

Thanks,
Phillip Hellewell

check_cms_originatorinfo_null.patch
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