From patchwork Thu Jan 31 13:22:24 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Petr Lautrbach X-Patchwork-Id: 10790521 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A5155139A for ; Thu, 31 Jan 2019 13:22:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 98E4F30D99 for ; Thu, 31 Jan 2019 13:22:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8D7E830B13; Thu, 31 Jan 2019 13:22:36 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DCBE130B13 for ; Thu, 31 Jan 2019 13:22:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732978AbfAaNWf (ORCPT ); Thu, 31 Jan 2019 08:22:35 -0500 Received: from mx1.redhat.com ([209.132.183.28]:56720 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732829AbfAaNWf (ORCPT ); Thu, 31 Jan 2019 08:22:35 -0500 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C0AA037E79 for ; Thu, 31 Jan 2019 13:22:34 +0000 (UTC) Received: from workstation.redhat.com (unknown [10.40.205.62]) by smtp.corp.redhat.com (Postfix) with ESMTP id 05A4460BF7; Thu, 31 Jan 2019 13:22:33 +0000 (UTC) From: Petr Lautrbach To: selinux@vger.kernel.org Cc: Petr Lautrbach Subject: [PATCH 1/3] libsepol: Fix RESOURCE_LEAK defects reported by coverity scan Date: Thu, 31 Jan 2019 14:22:24 +0100 Message-Id: <20190131132226.19030-1-plautrba@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Thu, 31 Jan 2019 13:22:34 +0000 (UTC) Sender: selinux-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: selinux@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Petr Lautrbach --- libsepol/cil/src/cil_binary.c | 12 ++++++++++++ libsepol/cil/src/cil_resolve_ast.c | 10 ++++++++++ libsepol/cil/src/cil_symtab.c | 1 + libsepol/src/expand.c | 3 +++ libsepol/src/kernel_to_cil.c | 2 ++ libsepol/src/kernel_to_conf.c | 2 ++ 6 files changed, 30 insertions(+) diff --git a/libsepol/cil/src/cil_binary.c b/libsepol/cil/src/cil_binary.c index 0cc6eeb1..a645c95d 100644 --- a/libsepol/cil/src/cil_binary.c +++ b/libsepol/cil/src/cil_binary.c @@ -912,6 +912,8 @@ int cil_sensalias_to_policydb(policydb_t *pdb, struct cil_alias *cil_alias) key = cil_strdup(cil_alias->datum.fqn); rc = symtab_insert(pdb, SYM_LEVELS, key, sepol_alias, SCOPE_DECL, 0, NULL); if (rc != SEPOL_OK) { + if (rc == 1) + free(sepol_alias); goto exit; } @@ -1763,11 +1765,13 @@ int __cil_avrulex_ioctl_to_hashtable(hashtab_t h, uint16_t kind, uint32_t src, u hashtab_xperms = cil_malloc(sizeof(*hashtab_xperms)); rc = ebitmap_cpy(hashtab_xperms, xperms); if (rc != SEPOL_OK) { + free(hashtab_xperms); free(avtab_key); goto exit; } rc = hashtab_insert(h, (hashtab_key_t)avtab_key, hashtab_xperms); if (rc != SEPOL_OK) { + free(hashtab_xperms); free(avtab_key); goto exit; } @@ -2157,6 +2161,7 @@ static int __cil_cond_expr_to_sepol_expr_helper(policydb_t *pdb, struct cil_list op->expr_type = COND_NEQ; break; default: + free(op); goto exit; } @@ -2283,6 +2288,7 @@ int cil_booleanif_to_policydb(policydb_t *pdb, const struct cil_db *db, struct c cond_expr_destroy(tmp_cond->expr); free(tmp_cond); + tmp_cond = NULL; for (cb_node = node->cl_head; cb_node != NULL; cb_node = cb_node->next) { if (cb_node->flavor == CIL_CONDBLOCK) { @@ -2327,6 +2333,11 @@ int cil_booleanif_to_policydb(policydb_t *pdb, const struct cil_db *db, struct c return SEPOL_OK; exit: + if (tmp_cond) { + if (tmp_cond->expr) + cond_expr_destroy(tmp_cond->expr); + free(tmp_cond); + } return rc; } @@ -4797,6 +4808,7 @@ static struct cil_list *cil_classperms_from_sepol(policydb_t *pdb, uint16_t clas return cp_list; exit: + free(cp); cil_log(CIL_ERR,"Failed to create CIL class-permissions from sepol values\n"); return NULL; } diff --git a/libsepol/cil/src/cil_resolve_ast.c b/libsepol/cil/src/cil_resolve_ast.c index fb9d9174..91187ed7 100644 --- a/libsepol/cil/src/cil_resolve_ast.c +++ b/libsepol/cil/src/cil_resolve_ast.c @@ -1522,6 +1522,7 @@ int cil_resolve_sidorder(struct cil_tree_node *current, void *extra_args) rc = cil_resolve_name(current, (char *)curr->data, CIL_SYM_SIDS, extra_args, &datum); if (rc != SEPOL_OK) { cil_log(CIL_ERR, "Failed to resolve sid %s in sidorder\n", (char *)curr->data); + free(new); goto exit; } cil_list_append(new, CIL_SID, datum); @@ -1591,6 +1592,8 @@ int cil_resolve_catorder(struct cil_tree_node *current, void *extra_args) return SEPOL_OK; exit: + if (new) + free(new); return rc; } @@ -1624,6 +1627,7 @@ int cil_resolve_sensitivityorder(struct cil_tree_node *current, void *extra_args return SEPOL_OK; exit: + free(new); return rc; } @@ -2853,6 +2857,7 @@ int cil_resolve_call1(struct cil_tree_node *current, void *extra_args) rc = cil_fill_cats(pc, &catset->cats); if (rc != SEPOL_OK) { cil_destroy_catset(catset); + cil_destroy_args(new_arg); goto exit; } cil_tree_node_init(&cat_node); @@ -2877,6 +2882,7 @@ int cil_resolve_call1(struct cil_tree_node *current, void *extra_args) if (rc != SEPOL_OK) { cil_log(CIL_ERR, "Failed to create anonymous level, rc: %d\n", rc); cil_destroy_level(level); + cil_destroy_args(new_arg); goto exit; } cil_tree_node_init(&lvl_node); @@ -2901,6 +2907,7 @@ int cil_resolve_call1(struct cil_tree_node *current, void *extra_args) if (rc != SEPOL_OK) { cil_log(CIL_ERR, "Failed to create anonymous levelrange, rc: %d\n", rc); cil_destroy_levelrange(range); + cil_destroy_args(new_arg); goto exit; } cil_tree_node_init(&range_node); @@ -2925,6 +2932,7 @@ int cil_resolve_call1(struct cil_tree_node *current, void *extra_args) if (rc != SEPOL_OK) { cil_log(CIL_ERR, "Failed to create anonymous ip address, rc: %d\n", rc); cil_destroy_ipaddr(ipaddr); + cil_destroy_args(new_arg); goto exit; } cil_tree_node_init(&addr_node); @@ -2955,6 +2963,7 @@ int cil_resolve_call1(struct cil_tree_node *current, void *extra_args) if (rc != SEPOL_OK) { cil_log(CIL_ERR, "Failed to create anonymous classpermission\n"); cil_destroy_classpermission(cp); + cil_destroy_args(new_arg); goto exit; } cil_tree_node_init(&cp_node); @@ -2970,6 +2979,7 @@ int cil_resolve_call1(struct cil_tree_node *current, void *extra_args) default: cil_log(CIL_ERR, "Unexpected flavor: %d\n", (((struct cil_param*)item->data)->flavor)); + cil_destroy_args(new_arg); rc = SEPOL_ERR; goto exit; } diff --git a/libsepol/cil/src/cil_symtab.c b/libsepol/cil/src/cil_symtab.c index 3769979b..2970b863 100644 --- a/libsepol/cil/src/cil_symtab.c +++ b/libsepol/cil/src/cil_symtab.c @@ -185,6 +185,7 @@ int cil_complex_symtab_insert(struct cil_complex_symtab *symtab, ckey->key2 == curr->ckey->key2 && ckey->key3 == curr->ckey->key3 && ckey->key4 == curr->ckey->key4) { + free(node); return SEPOL_EEXIST; } diff --git a/libsepol/src/expand.c b/libsepol/src/expand.c index 6f1b235e..125a6809 100644 --- a/libsepol/src/expand.c +++ b/libsepol/src/expand.c @@ -1451,6 +1451,7 @@ static int expand_filename_trans(expand_state_t *state, filename_trans_rule_t *r new_trans->name = strdup(cur_rule->name); if (!new_trans->name) { ERR(state->handle, "Out of memory!"); + free(new_trans); return -1; } new_trans->stype = i + 1; @@ -1460,6 +1461,8 @@ static int expand_filename_trans(expand_state_t *state, filename_trans_rule_t *r otype = calloc(1, sizeof(*otype)); if (!otype) { ERR(state->handle, "Out of memory!"); + free(new_trans->name); + free(new_trans); return -1; } otype->otype = mapped_otype; diff --git a/libsepol/src/kernel_to_cil.c b/libsepol/src/kernel_to_cil.c index 63e4d489..ec82f597 100644 --- a/libsepol/src/kernel_to_cil.c +++ b/libsepol/src/kernel_to_cil.c @@ -2031,6 +2031,8 @@ static int write_cond_av_list_to_cil(FILE *out, struct policydb *pdb, cond_av_li return 0; exit: + strs_free_all(strs); + strs_destroy(&strs); return rc; } diff --git a/libsepol/src/kernel_to_conf.c b/libsepol/src/kernel_to_conf.c index 215d940c..afadca6b 100644 --- a/libsepol/src/kernel_to_conf.c +++ b/libsepol/src/kernel_to_conf.c @@ -1999,6 +1999,8 @@ static int write_cond_av_list_to_conf(FILE *out, struct policydb *pdb, cond_av_l return 0; exit: + strs_free_all(strs); + strs_destroy(&strs); return rc; }