tree fdb8593c5157e859cf6acdf90ff330a98fa04185
parent da0c7503c0b886784bf8bcb279c7d71c1e50c438
author Eric Sesterhenn <eric.sesterhenn@x41-dsec.de> 1507485752 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1509093488 +0200

pkcs7: Prevent NULL pointer dereference, since sinfo is not always set.

commit 68a1fdbbf8bd3378325e45c19e167a165f9ffc3a upstream.

The ASN.1 parser does not necessarily set the sinfo field,
this patch prevents a NULL pointer dereference on broken
input.

Fixes: 99db44350672 ("PKCS#7: Appropriately restrict authenticated attributes and content type")
Signed-off-by: Eric Sesterhenn <eric.sesterhenn@x41-dsec.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>