Date: Wed, 14 Aug 2013 21:51:32 +0000 (UTC) From: Michael Tuexen <tuexen@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r254338 - head/sys/netinet Message-ID: <201308142151.r7ELpWVX061672@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: tuexen Date: Wed Aug 14 21:51:32 2013 New Revision: 254338 URL: http://svnweb.freebsd.org/changeset/base/254338 Log: Don't send uninitialized memory (two instances of 4 bytes) in every cookie on the wire. This bug was reported in https://bugzilla.mozilla.org/show_bug.cgi?id=905080 MFC after: 3 days Modified: head/sys/netinet/sctp_output.c Modified: head/sys/netinet/sctp_output.c ============================================================================== --- head/sys/netinet/sctp_output.c Wed Aug 14 21:11:26 2013 (r254337) +++ head/sys/netinet/sctp_output.c Wed Aug 14 21:51:32 2013 (r254338) @@ -5406,6 +5406,14 @@ do_a_abort: } SCTP_BUF_LEN(m) = sizeof(struct sctp_init_chunk); + /* + * We might not overwrite the identification[] completely and on + * some platforms time_entered will contain some padding. Therefore + * zero out the cookie to avoid putting uninitialized memory on the + * wire. + */ + memset(&stc, 0, sizeof(struct sctp_state_cookie)); + /* the time I built cookie */ (void)SCTP_GETTIME_TIMEVAL(&stc.time_entered);
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201308142151.r7ELpWVX061672>