From owner-dev-commits-src-branches@freebsd.org Tue Mar 2 18:43:45 2021 Return-Path: Delivered-To: dev-commits-src-branches@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 1C6CA54BE5F; Tue, 2 Mar 2021 18:43:45 +0000 (UTC) (envelope-from git@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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4DqmHM0ngTz4tPf; Tue, 2 Mar 2021 18:43:43 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (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 did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id EA4861BC63; Tue, 2 Mar 2021 18:43:42 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 122IhgGt018740; Tue, 2 Mar 2021 18:43:42 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 122IhgMb018739; Tue, 2 Mar 2021 18:43:42 GMT (envelope-from git) Date: Tue, 2 Mar 2021 18:43:42 GMT Message-Id: <202103021843.122IhgMb018739@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Edward Tomasz Napierala Subject: git: a3576b620707 - stable/13 - libc: fix buffer overrun in getrpcport(3) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: trasz X-Git-Repository: src X-Git-Refname: refs/heads/stable/13 X-Git-Reftype: branch X-Git-Commit: a3576b6207074ba5182be253c26af72f8fb51759 Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-branches@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commits to the stable branches of the FreeBSD src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Mar 2021 18:43:45 -0000 The branch stable/13 has been updated by trasz: URL: https://cgit.FreeBSD.org/src/commit/?id=a3576b6207074ba5182be253c26af72f8fb51759 commit a3576b6207074ba5182be253c26af72f8fb51759 Author: Edward Tomasz Napierala AuthorDate: 2021-01-31 21:41:55 +0000 Commit: Edward Tomasz Napierala CommitDate: 2021-03-02 18:43:26 +0000 libc: fix buffer overrun in getrpcport(3) Reviewed By: markj Sponsored by: NetApp, Inc. Sponsored by: Klara, Inc. Differential Revision: https://reviews.freebsd.org/D27332 (cherry picked from commit 5299d64b2b9f7a25e423ef1785d9402a0ef198d3) --- lib/libc/rpc/getrpcport.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/lib/libc/rpc/getrpcport.c b/lib/libc/rpc/getrpcport.c index 2b2d459c8887..4abc9a0c16af 100644 --- a/lib/libc/rpc/getrpcport.c +++ b/lib/libc/rpc/getrpcport.c @@ -62,14 +62,14 @@ getrpcport(char *host, int prognum, int versnum, int proto) assert(host != NULL); - if ((hp = gethostbyname(host)) == NULL) + if ((hp = gethostbyname2(host, AF_INET)) == NULL) return (0); memset(&addr, 0, sizeof(addr)); addr.sin_len = sizeof(struct sockaddr_in); addr.sin_family = AF_INET; addr.sin_port = 0; - if (hp->h_length > addr.sin_len) - hp->h_length = addr.sin_len; + if (hp->h_length > sizeof(addr.sin_addr.s_addr)) + hp->h_length = sizeof(addr.sin_addr.s_addr); memcpy(&addr.sin_addr.s_addr, hp->h_addr, (size_t)hp->h_length); /* Inconsistent interfaces need casts! :-( */ return (pmap_getport(&addr, (u_long)prognum, (u_long)versnum,