CVS commit: [netbsd-7-1] src/sys/dist/pf/net

["Soren Jacobsen" <snj%netbsd.org@localhost>]

Module Name:    src
Committed By:   snj
Date:           Sat Feb 10 04:21:17 UTC 2018

Modified Files:
        src/sys/dist/pf/net [netbsd-7-1]: pf.c

Log Message:
Pull up following revision(s) (requested by maxv in ticket #1565):
        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 -r1.72 -r1.72.10.1 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.