From owner-svn-src-stable@freebsd.org Tue Jun 9 09:04:58 2020 Return-Path: Delivered-To: svn-src-stable@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 6CCA934E2B0; Tue, 9 Jun 2020 09:04:58 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 49h42L2Lf5z44jx; Tue, 9 Jun 2020 09:04:58 +0000 (UTC) (envelope-from kib@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 4952B133AB; Tue, 9 Jun 2020 09:04:58 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 05994wb1022789; Tue, 9 Jun 2020 09:04:58 GMT (envelope-from kib@FreeBSD.org) Received: (from kib@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 05994v4H022787; Tue, 9 Jun 2020 09:04:57 GMT (envelope-from kib@FreeBSD.org) Message-Id: <202006090904.05994v4H022787@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kib set sender to kib@FreeBSD.org using -f From: Konstantin Belousov Date: Tue, 9 Jun 2020 09:04:57 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r361963 - stable/12/libexec/rtld-elf X-SVN-Group: stable-12 X-SVN-Commit-Author: kib X-SVN-Commit-Paths: stable/12/libexec/rtld-elf X-SVN-Commit-Revision: 361963 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Jun 2020 09:04:58 -0000 Author: kib Date: Tue Jun 9 09:04:57 2020 New Revision: 361963 URL: https://svnweb.freebsd.org/changeset/base/361963 Log: MFC r361725, r361728: Do not allow to load ET_DYN object with DF_1_PIE flag set. Modified: stable/12/libexec/rtld-elf/rtld.c stable/12/libexec/rtld-elf/rtld.h Directory Properties: stable/12/ (props changed) Modified: stable/12/libexec/rtld-elf/rtld.c ============================================================================== --- stable/12/libexec/rtld-elf/rtld.c Tue Jun 9 07:07:29 2020 (r361962) +++ stable/12/libexec/rtld-elf/rtld.c Tue Jun 9 09:04:57 2020 (r361963) @@ -1321,6 +1321,8 @@ digest_dynamic1(Obj_Entry *obj, int early, const Elf_D obj->z_interpose = true; if (dynp->d_un.d_val & DF_1_NODEFLIB) obj->z_nodeflib = true; + if (dynp->d_un.d_val & DF_1_PIE) + obj->z_pie = true; break; default: @@ -2533,6 +2535,10 @@ do_load_object(int fd, const char *name, char *path, s obj->path = path; if (!digest_dynamic(obj, 0)) goto errp; + if (obj->z_pie) { + _rtld_error("Cannot load PIE binary %s as DSO", obj->path); + goto errp; + } dbg("%s valid_hash_sysv %d valid_hash_gnu %d dynsymcount %d", obj->path, obj->valid_hash_sysv, obj->valid_hash_gnu, obj->dynsymcount); if (obj->z_noopen && (flags & (RTLD_LO_DLOPEN | RTLD_LO_TRACE)) == Modified: stable/12/libexec/rtld-elf/rtld.h ============================================================================== --- stable/12/libexec/rtld-elf/rtld.h Tue Jun 9 07:07:29 2020 (r361962) +++ stable/12/libexec/rtld-elf/rtld.h Tue Jun 9 09:04:57 2020 (r361963) @@ -258,6 +258,7 @@ typedef struct Struct_Obj_Entry { bool z_interpose : 1; /* Interpose all objects but main */ bool z_nodeflib : 1; /* Don't search default library path */ bool z_global : 1; /* Make the object global */ + bool z_pie : 1; /* Object proclaimed itself PIE executable */ bool static_tls : 1; /* Needs static TLS allocation */ bool static_tls_copied : 1; /* Needs static TLS copying */ bool ref_nodel : 1; /* Refcount increased to prevent dlclose */