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PR/44059 CVS commit: [netbsd-6] src/sys/dist/pf/net

The following reply was made to PR kern/44059; it has been noted by GNATS.

From: "Soren Jacobsen" <>
Subject: PR/44059 CVS commit: [netbsd-6] src/sys/dist/pf/net
Date: Sat, 10 Feb 2018 04:25:38 +0000

 Module Name:	src
 Committed By:	snj
 Date:		Sat Feb 10 04:25:38 UTC 2018
 Modified Files:
 	src/sys/dist/pf/net [netbsd-6]: pf.c
 Log Message:
 Pull up following revision(s) (requested by maxv in ticket #1527):
 	sys/dist/pf/net/pf.c: revision 1.78 via patch
 Oh, what is this. Fix a remotely-triggerable integer overflow: the way we
 define TCPOLEN_SACK makes it unsigned, and the comparison in the while()
 is unsigned too. That's not the expected behavior, the original code
 wanted a signed comparison.
 It's pretty easy to make 'hlen' go negative and trigger a buffer overflow.
 This bug was reported 8 years ago by Lucio Albornoz in PR/44059.
 To generate a diff of this commit:
 cvs rdiff -u -r1.68 -r1.68.2.1 src/sys/dist/pf/net/pf.c
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

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