From owner-dev-commits-src-all@freebsd.org Wed Apr 14 07:24:35 2021 Return-Path: Delivered-To: dev-commits-src-all@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 3AB025CCD16; Wed, 14 Apr 2021 07:24:35 +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 4FKv9v19hKz4fdV; Wed, 14 Apr 2021 07:24:35 +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 1B28219DA1; Wed, 14 Apr 2021 07:24:35 +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 13E7OZ5Q067565; Wed, 14 Apr 2021 07:24:35 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 13E7OZFF067564; Wed, 14 Apr 2021 07:24:35 GMT (envelope-from git) Date: Wed, 14 Apr 2021 07:24:35 GMT Message-Id: <202104140724.13E7OZFF067564@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Konstantin Belousov Subject: git: 116f26f947b8 - main - sbuf_uionew(): sbuf_new() takes int as length MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kib X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 116f26f947b8bbf868dcd85d79226406029a45ee Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-all@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for all branches of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 14 Apr 2021 07:24:35 -0000 The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=116f26f947b8bbf868dcd85d79226406029a45ee commit 116f26f947b8bbf868dcd85d79226406029a45ee Author: Konstantin Belousov AuthorDate: 2021-04-13 19:12:19 +0000 Commit: Konstantin Belousov CommitDate: 2021-04-14 07:23:20 +0000 sbuf_uionew(): sbuf_new() takes int as length and length should be not less than SBUF_MINSIZE Reported and tested by: pho Noted and reviewed by: markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D29752 --- sys/kern/subr_sbuf.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sys/kern/subr_sbuf.c b/sys/kern/subr_sbuf.c index cdeaf690208f..b7f135e81206 100644 --- a/sys/kern/subr_sbuf.c +++ b/sys/kern/subr_sbuf.c @@ -266,6 +266,10 @@ sbuf_uionew(struct sbuf *s, struct uio *uio, int *error) KASSERT(error != NULL, ("%s called with NULL error pointer", __func__)); + if (uio->uio_resid >= INT_MAX || uio->uio_resid < SBUF_MINSIZE - 1) { + *error = EINVAL; + return (NULL); + } s = sbuf_new(s, NULL, uio->uio_resid + 1, 0); if (s == NULL) { *error = ENOMEM;