c674ede188
We mistakenly used the extoff value from the last packet to patch the next_header field. If a malicious host sends a chain of fragmented packets where the first packet and the final packet have different lengths or number of extension headers we'd patch the next_header at the wrong offset. This can potentially lead to panics or rule bypasses. Security: CVE-2019-5597 Obtained from: OpenBSD Reported by: Corentin Bayet, Nicolas Collignon, Luca Moro at Synacktiv
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