From owner-svn-src-stable@freebsd.org Sun Jun 14 05:27:38 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 9456732EEDA; Sun, 14 Jun 2020 05:27:38 +0000 (UTC) (envelope-from hselasky@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 49l2zG3Q3vz3gLd; Sun, 14 Jun 2020 05:27:38 +0000 (UTC) (envelope-from hselasky@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 6BFC727323; Sun, 14 Jun 2020 05:27:38 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 05E5Rcec061249; Sun, 14 Jun 2020 05:27:38 GMT (envelope-from hselasky@FreeBSD.org) Received: (from hselasky@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 05E5Rct3061248; Sun, 14 Jun 2020 05:27:38 GMT (envelope-from hselasky@FreeBSD.org) Message-Id: <202006140527.05E5Rct3061248@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: hselasky set sender to hselasky@FreeBSD.org using -f From: Hans Petter Selasky Date: Sun, 14 Jun 2020 05:27:38 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r362167 - stable/11/sys/dev/usb/net X-SVN-Group: stable-11 X-SVN-Commit-Author: hselasky X-SVN-Commit-Paths: stable/11/sys/dev/usb/net X-SVN-Commit-Revision: 362167 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: Sun, 14 Jun 2020 05:27:38 -0000 Author: hselasky Date: Sun Jun 14 05:27:37 2020 New Revision: 362167 URL: https://svnweb.freebsd.org/changeset/base/362167 Log: MFC r362056: Add missing range checks when receiving USB ethernet packets. Found by: Ilja Van Sprundel, IOActive Sponsored by: Mellanox Technologies Modified: stable/11/sys/dev/usb/net/if_smsc.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/dev/usb/net/if_smsc.c ============================================================================== --- stable/11/sys/dev/usb/net/if_smsc.c Sun Jun 14 05:25:06 2020 (r362166) +++ stable/11/sys/dev/usb/net/if_smsc.c Sun Jun 14 05:27:37 2020 (r362167) @@ -970,7 +970,7 @@ smsc_bulk_read_callback(struct usb_xfer *xfer, usb_err struct mbuf *m; struct usb_page_cache *pc; uint32_t rxhdr; - uint16_t pktlen; + int pktlen; int off; int actlen; @@ -996,6 +996,9 @@ smsc_bulk_read_callback(struct usb_xfer *xfer, usb_err /* The frame header is always aligned on a 4 byte boundary */ off = ((off + 0x3) & ~0x3); + if ((off + sizeof(rxhdr)) > actlen) + goto tr_setup; + usbd_copy_out(pc, off, &rxhdr, sizeof(rxhdr)); off += (sizeof(rxhdr) + ETHER_ALIGN); rxhdr = le32toh(rxhdr); @@ -1024,7 +1027,13 @@ smsc_bulk_read_callback(struct usb_xfer *xfer, usb_err if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); goto tr_setup; } - + if (pktlen > m->m_len) { + smsc_dbg_printf(sc, "buffer too small %d vs %d bytes", + pktlen, m->m_len); + if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); + m_freem(m); + goto tr_setup; + } usbd_copy_out(pc, off, mtod(m, uint8_t *), pktlen); /* Check if RX TCP/UDP checksumming is being offloaded */