From owner-svn-ports-head@freebsd.org Thu Feb 25 02:33:12 2021 Return-Path: Delivered-To: svn-ports-head@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 636AB5539FB; Thu, 25 Feb 2021 02:33:12 +0000 (UTC) (envelope-from philip@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 4DmGzp60Lyz3Hst; Thu, 25 Feb 2021 02:33:10 +0000 (UTC) (envelope-from philip@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 4873B7B18; Thu, 25 Feb 2021 02:33:10 +0000 (UTC) (envelope-from philip@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 11P2XAOk087716; Thu, 25 Feb 2021 02:33:10 GMT (envelope-from philip@FreeBSD.org) Received: (from philip@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 11P2XAax087715; Thu, 25 Feb 2021 02:33:10 GMT (envelope-from philip@FreeBSD.org) Message-Id: <202102250233.11P2XAax087715@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: philip set sender to philip@FreeBSD.org using -f From: Philip Paeps Date: Thu, 25 Feb 2021 02:33:10 +0000 (UTC) To: ports-committers@freebsd.org, svn-ports-all@freebsd.org, svn-ports-head@freebsd.org Subject: svn commit: r566519 - head/security/vuxml X-SVN-Group: ports-head X-SVN-Commit-Author: philip X-SVN-Commit-Paths: head/security/vuxml X-SVN-Commit-Revision: 566519 X-SVN-Commit-Repository: ports MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-ports-head@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: SVN commit messages for the ports tree for head List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 25 Feb 2021 02:33:12 -0000 Author: philip Date: Thu Feb 25 02:33:09 2021 New Revision: 566519 URL: https://svnweb.freebsd.org/changeset/ports/566519 Log: security/vuxml: add FreeBSD SA-21:06.xen Modified: head/security/vuxml/vuln.xml Modified: head/security/vuxml/vuln.xml ============================================================================== --- head/security/vuxml/vuln.xml Thu Feb 25 02:33:06 2021 (r566518) +++ head/security/vuxml/vuln.xml Thu Feb 25 02:33:09 2021 (r566519) @@ -78,6 +78,44 @@ Notes: * Do not forget port variants (linux-f10-libxml2, libxml2, etc.) --> + + FreeBSD -- Xen grant mapping error handling issues + + + FreeBSD-kernel + 12.212.2_4 + 11.411.4_8 + + + + +

Problem Description:

Grant mapping operations often occur in batch hypercalls, where a + number of operations are done in a single hypercall, the success or + failure of each one reported to the backend driver, and the backend + driver then loops over the results, performing follow-up actions + based on the success or failure of each operation.

Unfortunately, when running in HVM/PVH mode, the FreeBSD backend + drivers mishandle this: Some errors are ignored, effectively implying + their success from the success of related batch elements. In other + cases, errors resulting from one batch element lead to further batch + elements not being inspected, and hence successful ones to not be + possible to properly unmap upon error recovery.

Impact:

A malicious or buggy frontend driver may be able to cause resource + leaks in the domain running the corresponding backend driver.

+ + + + CVE-2021-26932 + SA-21:06.xen + + + 2021-02-24 + 2021-02-25 + + + FreeBSD -- jail_attach(2) relies on the caller to change the cwd