From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9A31CC31E45 for ; Thu, 13 Jun 2019 22:58:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6E9AE2147A for ; Thu, 13 Jun 2019 22:58:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726581AbfFMW6g (ORCPT ); Thu, 13 Jun 2019 18:58:36 -0400 Received: from mail.us.es ([193.147.175.20]:40746 "EHLO mail.us.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726575AbfFMW6g (ORCPT ); Thu, 13 Jun 2019 18:58:36 -0400 Received: from antivirus1-rhel7.int (unknown [192.168.2.11]) by mail.us.es (Postfix) with ESMTP id C7585C3280 for ; Fri, 14 Jun 2019 00:58:33 +0200 (CEST) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id B8C23DA702 for ; Fri, 14 Jun 2019 00:58:33 +0200 (CEST) Received: by antivirus1-rhel7.int (Postfix, from userid 99) id AE5D3DA701; Fri, 14 Jun 2019 00:58:33 +0200 (CEST) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id 56FA8DA702 for ; Fri, 14 Jun 2019 00:58:31 +0200 (CEST) Received: from 192.168.1.97 (192.168.1.97) by antivirus1-rhel7.int (F-Secure/fsigk_smtp/550/antivirus1-rhel7.int); Fri, 14 Jun 2019 00:58:31 +0200 (CEST) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/antivirus1-rhel7.int) Received: from salvia.here (sys.soleta.eu [212.170.55.40]) (Authenticated sender: pneira@us.es) by entrada.int (Postfix) with ESMTPA id 3D9314265A31 for ; Fri, 14 Jun 2019 00:58:31 +0200 (CEST) X-SMTPAUTHUS: auth mail.us.es From: Pablo Neira Ayuso To: netfilter-devel@vger.kernel.org Subject: [PATCH nft] evaluate: use-after-free in meter Date: Fri, 14 Jun 2019 00:58:27 +0200 Message-Id: <20190613225827.32200-1-pablo@netfilter.org> X-Mailer: git-send-email 2.11.0 X-Virus-Scanned: ClamAV using ClamSMTP Sender: netfilter-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org Similar to bbe139fdf5a5 ("evaluate: use-after-free in implicit set"). ==12727== Invalid read of size 4 ==12727== at 0x72DB515: expr_free (expression.c:86) ==12727== by 0x72D3092: set_free (rule.c:367) ==12727== by 0x72DB555: expr_destroy (expression.c:79) ==12727== by 0x72DB555: expr_free (expression.c:95) ==12727== by 0x72D7A35: meter_stmt_destroy (statement.c:137) ==12727== by 0x72D7A07: stmt_free (statement.c:50) ==12727== by 0x72D7AD7: stmt_list_free (statement.c:60) ==12727== by 0x72D32EF: rule_free (rule.c:610) ==12727== by 0x72D3834: chain_free (rule.c:827) ==12727== by 0x72D45D4: table_free (rule.c:1184) ==12727== by 0x72D46A7: __cache_flush (rule.c:293) ==12727== by 0x72D472C: cache_release (rule.c:313) ==12727== by 0x72D4A79: cache_update (rule.c:264) ==12727== Address 0x64f14c8 is 56 bytes inside a block of size 128 free'd ==12727== at 0x4C2CDDB: free (vg_replace_malloc.c:530) ==12727== by 0x72D7A2C: meter_stmt_destroy (statement.c:136) ==12727== by 0x72D7A07: stmt_free (statement.c:50) ==12727== by 0x72D7AD7: stmt_list_free (statement.c:60) ==12727== by 0x72D32EF: rule_free (rule.c:610) ==12727== by 0x72D3834: chain_free (rule.c:827) ==12727== by 0x72D45D4: table_free (rule.c:1184) ==12727== by 0x72D46A7: __cache_flush (rule.c:293) ==12727== by 0x72D472C: cache_release (rule.c:313) ==12727== by 0x72D4A79: cache_update (rule.c:264) ==12727== by 0x72F82CE: nft_evaluate (libnftables.c:388) ==12727== by 0x72F8A8B: nft_run_cmd_from_buffer (libnftables.c:428) Signed-off-by: Pablo Neira Ayuso --- src/evaluate.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/evaluate.c b/src/evaluate.c index 4a06c7e8f673..a41a28e97288 100644 --- a/src/evaluate.c +++ b/src/evaluate.c @@ -2114,7 +2114,8 @@ static int stmt_evaluate_meter(struct eval_ctx *ctx, struct stmt *stmt) if (key->timeout) set->set_flags |= NFT_SET_TIMEOUT; - setref = implicit_set_declaration(ctx, stmt->meter.name, key, set); + setref = implicit_set_declaration(ctx, stmt->meter.name, + expr_get(key), set); setref->set->desc.size = stmt->meter.size; stmt->meter.set = setref; -- 2.11.0