From owner-svn-src-head@freebsd.org Wed Aug 15 20:23:18 2018 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id B6B7F106F2FF; Wed, 15 Aug 2018 20:23:18 +0000 (UTC) (envelope-from jamie@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 57C4979680; Wed, 15 Aug 2018 20:23:18 +0000 (UTC) (envelope-from jamie@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 04E3176B8; Wed, 15 Aug 2018 20:23:17 +0000 (UTC) (envelope-from jamie@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id w7FKNHxN055320; Wed, 15 Aug 2018 20:23:17 GMT (envelope-from jamie@FreeBSD.org) Received: (from jamie@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w7FKNH4u055319; Wed, 15 Aug 2018 20:23:17 GMT (envelope-from jamie@FreeBSD.org) Message-Id: <201808152023.w7FKNH4u055319@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: jamie set sender to jamie@FreeBSD.org using -f From: Jamie Gritton Date: Wed, 15 Aug 2018 20:23:17 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r337867 - head/usr.sbin/jail X-SVN-Group: head X-SVN-Commit-Author: jamie X-SVN-Commit-Paths: head/usr.sbin/jail X-SVN-Commit-Revision: 337867 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Aug 2018 20:23:18 -0000 Author: jamie Date: Wed Aug 15 20:23:17 2018 New Revision: 337867 URL: https://svnweb.freebsd.org/changeset/base/337867 Log: Don't let clobber jailparam values when checking for modification of init-only parameters. Compare string parameter values with strncmp, not memcmp. PR: 230487 Reported by: Jason Mader MFC after: 3 days Modified: head/usr.sbin/jail/jail.c Modified: head/usr.sbin/jail/jail.c ============================================================================== --- head/usr.sbin/jail/jail.c Wed Aug 15 20:23:08 2018 (r337866) +++ head/usr.sbin/jail/jail.c Wed Aug 15 20:23:17 2018 (r337867) @@ -803,8 +803,10 @@ rdtun_params(struct cfjail *j, int dofail) exit(1); } for (jp = j->jp; jp < j->jp + j->njp; jp++) - if (JP_RDTUN(jp) && strcmp(jp->jp_name, "jid")) + if (JP_RDTUN(jp) && strcmp(jp->jp_name, "jid")) { *++rtjp = *jp; + rtjp->jp_value = NULL; + } rval = 0; if (jailparam_get(rtparams, nrt, bool_param(j->intparams[IP_ALLOW_DYING]) ? JAIL_DYING : 0) > 0) { @@ -815,8 +817,11 @@ rdtun_params(struct cfjail *j, int dofail) jp->jp_valuelen == 0 && *(int *)jp->jp_value) && !(rtjp->jp_valuelen == jp->jp_valuelen && - !memcmp(rtjp->jp_value, jp->jp_value, - jp->jp_valuelen))) { + !((jp->jp_ctltype & CTLTYPE) == + CTLTYPE_STRING ? strncmp(rtjp->jp_value, + jp->jp_value, jp->jp_valuelen) : + memcmp(rtjp->jp_value, jp->jp_value, + jp->jp_valuelen)))) { if (dofail) { jail_warnx(j, "%s cannot be " "changed after creation",