CVS commit: src/sys/netipsec

["Maxime Villard" <maxv%netbsd.org@localhost>]

Module Name:    src
Committed By:   maxv
Date:           Sun Jan 14 16:36:04 UTC 2018

Modified Files:
        src/sys/netipsec: xform_ipip.c

Log Message:
Fix use-after-free. There is a path where the mbuf gets pulled up without
a proper mtod afterwards:

218     ipo = mtod(m, struct ip *);
281     m = m_pullup(m, hlen);
232     ipo->ip_src.s_addr

Found by Mootja.

Meanwhile it seems to me that 'ipo' should be set to NULL if the inner
packet is IPv6, but I'll revisit that later.


To generate a diff of this commit:
cvs rdiff -u -r1.55 -r1.56 src/sys/netipsec/xform_ipip.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.