Date: Wed, 27 Dec 2017 03:18:13 +0000 (UTC) From: Ed Maste <emaste@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r327229 - stable/11/contrib/tcpdump Message-ID: <201712270318.vBR3IDKd053964@repo.freebsd.org>
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Author: emaste Date: Wed Dec 27 03:18:13 2017 New Revision: 327229 URL: https://svnweb.freebsd.org/changeset/base/327229 Log: MFC r317409 by glebius: Cherry-pick 5d3c5151c2b885aab36627bafb8539238da27b2d, it fixes use after free if tcpdump(1) is run on non-existent interface. Modified: stable/11/contrib/tcpdump/tcpdump.c Directory Properties: stable/11/ (props changed) Modified: stable/11/contrib/tcpdump/tcpdump.c ============================================================================== --- stable/11/contrib/tcpdump/tcpdump.c Wed Dec 27 00:34:13 2017 (r327228) +++ stable/11/contrib/tcpdump/tcpdump.c Wed Dec 27 03:18:13 2017 (r327229) @@ -1085,9 +1085,9 @@ open_interface(const char *device, netdissect_options /* * Return an error for our caller to handle. */ - pcap_close(pc); snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s: %s\n(%s)", device, pcap_statustostr(status), cp); + pcap_close(pc); return (NULL); } else if (status == PCAP_ERROR_PERM_DENIED && *cp != '\0') error("%s: %s\n(%s)", device,
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