[Bug 266442] kernel page fault on packet with broken lengths if ipfilter is loaded

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From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 03 Feb 2023 15:46:44 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=266442

--- Comment #8 from Cy Schubert <cy@FreeBSD.org> ---
It was indeed an IP Filter bug. It was not telling pfil to drop the packet when
m_pullup() had freed the mbuf chain while failing. The bug likely exists in
NetBSD too. I've sent them an email.

This ticket will be closed after the patch has been MFCed to stable.

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