From: Jeremy Harris <jgh146exb@wizmail.org>
Date: Wed, 7 Feb 2018 23:09:55 +0000 (+0000)
Subject: DKIM: fix buffer overflow in verify
X-Git-Tag: exim-4_91_RC1~72
X-Git-Url: https://git.exim.org/exim.git/commitdiff_plain/744976d4d6e6c8f8ea36ad19a6570c45f21aa4f4?hp=744976d4d6e6c8f8ea36ad19a6570c45f21aa4f4

DKIM: fix buffer overflow in verify

Caused crash in free() by corrupting malloc metadata.

Reported-by: University of Cambridge
Broken-by: 80a47a2c96
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