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[pkgsrc/pkgsrc-2016Q2]: pkgsrc/sysutils/xenkernel41 Pullup ticket #5072 - req...
details: https://anonhg.NetBSD.org/pkgsrc/rev/9ed8457c350e
branches: pkgsrc-2016Q2
changeset: 408857:9ed8457c350e
user: spz <spz%pkgsrc.org@localhost>
date: Thu Jul 28 14:09:14 2016 +0000
description:
Pullup ticket #5072 - requested by bouyer
sysutils/xenkernel41: security patch
Revisions pulled up:
- sysutils/xenkernel41/Makefile 1.50
- sysutils/xenkernel41/distinfo 1.43
- sysutils/xenkernel41/patches/patch-XSA-182 1.1
-------------------------------------------------------------------
Module Name: pkgsrc
Committed By: bouyer
Date: Tue Jul 26 15:59:20 UTC 2016
Modified Files:
pkgsrc/sysutils/xenkernel41: Makefile distinfo
Added Files:
pkgsrc/sysutils/xenkernel41/patches: patch-XSA-182
Log Message:
Apply security patch from XSA-182. Bump PKGREVISION
xen 4.2 is not vulnerable to XSA-183.
To generate a diff of this commit:
cvs rdiff -u -r1.49 -r1.50 pkgsrc/sysutils/xenkernel41/Makefile
cvs rdiff -u -r1.42 -r1.43 pkgsrc/sysutils/xenkernel41/distinfo
cvs rdiff -u -r0 -r1.1 pkgsrc/sysutils/xenkernel41/patches/patch-XSA-182
diffstat:
sysutils/xenkernel41/Makefile | 4 +-
sysutils/xenkernel41/distinfo | 3 +-
sysutils/xenkernel41/patches/patch-XSA-182 | 90 ++++++++++++++++++++++++++++++
3 files changed, 94 insertions(+), 3 deletions(-)
diffs (126 lines):
diff -r 70c02bee3835 -r 9ed8457c350e sysutils/xenkernel41/Makefile
--- a/sysutils/xenkernel41/Makefile Thu Jul 28 13:54:43 2016 +0000
+++ b/sysutils/xenkernel41/Makefile Thu Jul 28 14:09:14 2016 +0000
@@ -1,9 +1,9 @@
-# $NetBSD: Makefile,v 1.48 2016/01/07 17:55:55 bouyer Exp $
+# $NetBSD: Makefile,v 1.48.4.1 2016/07/28 14:09:14 spz Exp $
VERSION= 4.1.6.1
DISTNAME= xen-${VERSION}
PKGNAME= xenkernel41-${VERSION}
-PKGREVISION= 18
+PKGREVISION= 19
CATEGORIES= sysutils
MASTER_SITES= http://bits.xensource.com/oss-xen/release/${VERSION}/
diff -r 70c02bee3835 -r 9ed8457c350e sysutils/xenkernel41/distinfo
--- a/sysutils/xenkernel41/distinfo Thu Jul 28 13:54:43 2016 +0000
+++ b/sysutils/xenkernel41/distinfo Thu Jul 28 14:09:14 2016 +0000
@@ -1,4 +1,4 @@
-$NetBSD: distinfo,v 1.42 2016/03/01 20:09:04 joerg Exp $
+$NetBSD: distinfo,v 1.42.4.1 2016/07/28 14:09:14 spz Exp $
SHA1 (xen-4.1.6.1.tar.gz) = e5f15feb0821578817a65ede16110c6eac01abd0
RMD160 (xen-4.1.6.1.tar.gz) = bff11421fc44a26f2cc3156713267abcb36d7a19
@@ -37,6 +37,7 @@
SHA1 (patch-CVE-2015-8339) = e5485ab9e73fa9a63c566505b8de805530ac678e
SHA1 (patch-Config.mk) = a43ed1b3304d6383dc093acd128a7f373d0ca266
SHA1 (patch-XSA-166) = 24fccf8e30ccf910a128e5e0365800191a90524c
+SHA1 (patch-XSA-182) = 70a7a6175a4b87ffaf72cbc5a3932f076efa3f9c
SHA1 (patch-xen_Makefile) = d1c7e4860221f93d90818f45a77748882486f92b
SHA1 (patch-xen_arch_x86_Rules.mk) = 6b9b4bfa28924f7d3f6c793a389f1a7ac9d228e2
SHA1 (patch-xen_arch_x86_cpu_mcheck_vmce.c) = 5afd01780a13654f1d21bf1562f6431c8370be0b
diff -r 70c02bee3835 -r 9ed8457c350e sysutils/xenkernel41/patches/patch-XSA-182
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sysutils/xenkernel41/patches/patch-XSA-182 Thu Jul 28 14:09:14 2016 +0000
@@ -0,0 +1,90 @@
+$NetBSD: patch-XSA-182,v 1.1.2.2 2016/07/28 14:09:15 spz Exp $
+
+backported from:
+
+From 798c1498f764bfaa7b0b955bab40b01b0610d372 Mon Sep 17 00:00:00 2001
+From: Andrew Cooper <andrew.cooper3%citrix.com@localhost>
+Date: Mon, 11 Jul 2016 14:32:03 +0100
+Subject: [PATCH] x86/pv: Remove unsafe bits from the mod_l?_entry() fastpath
+
+All changes in writeability and cacheability must go through full
+re-validation.
+
+Rework the logic as a whitelist, to make it clearer to follow.
+
+This is XSA-182
+
+--- xen/arch/x86/mm.c.orig 2016-07-26 16:51:13.000000000 +0200
++++ xen/arch/x86/mm.c 2016-07-26 16:53:07.000000000 +0200
+@@ -1792,6 +1792,14 @@
+ _t ## e_get_intpte(_o), _t ## e_get_intpte(_n), \
+ (_m), (_v), (_ad))
+
++/*
++ * PTE flags that a guest may change without re-validating the PTE.
++ * All other bits affect translation, caching, or Xen's safety.
++ */
++#define FASTPATH_FLAG_WHITELIST \
++ (_PAGE_NX_BIT | _PAGE_AVAIL_HIGH | _PAGE_AVAIL | _PAGE_GLOBAL | \
++ _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_USER)
++
+ /* Update the L1 entry at pl1e to new value nl1e. */
+ static int mod_l1_entry(l1_pgentry_t *pl1e, l1_pgentry_t nl1e,
+ unsigned long gl1mfn, int preserve_ad,
+@@ -1829,8 +1837,8 @@
+ return 0;
+ }
+
+- /* Fast path for identical mapping, r/w and presence. */
+- if ( !l1e_has_changed(ol1e, nl1e, _PAGE_RW | _PAGE_PRESENT) )
++ /* Fast path for sufficiently-similar mappings.*/
++ if ( !l1e_has_changed(ol1e, nl1e, ~FASTPATH_FLAG_WHITELIST) )
+ {
+ adjust_guest_l1e(nl1e, pt_dom);
+ rc = UPDATE_ENTRY(l1, pl1e, ol1e, nl1e, gl1mfn, pt_vcpu,
+@@ -1897,11 +1905,8 @@
+ return 0;
+ }
+
+- /* Fast path for identical mapping and presence. */
+- if ( !l2e_has_changed(ol2e, nl2e,
+- unlikely(opt_allow_superpage)
+- ? _PAGE_PSE | _PAGE_RW | _PAGE_PRESENT
+- : _PAGE_PRESENT) )
++ /* Fast path for sufficiently-similar mappings. */
++ if ( !l2e_has_changed(ol2e, nl2e, ~FASTPATH_FLAG_WHITELIST) )
+ {
+ adjust_guest_l2e(nl2e, d);
+ rc = UPDATE_ENTRY(l2, pl2e, ol2e, nl2e, pfn, vcpu, preserve_ad);
+@@ -1965,8 +1970,8 @@
+ return -EINVAL;
+ }
+
+- /* Fast path for identical mapping and presence. */
+- if ( !l3e_has_changed(ol3e, nl3e, _PAGE_PRESENT) )
++ /* Fast path for sufficiently-similar mappings. */
++ if ( !l3e_has_changed(ol3e, nl3e, ~FASTPATH_FLAG_WHITELIST) )
+ {
+ adjust_guest_l3e(nl3e, d);
+ rc = UPDATE_ENTRY(l3, pl3e, ol3e, nl3e, pfn, vcpu, preserve_ad);
+@@ -2035,8 +2040,8 @@
+ return -EINVAL;
+ }
+
+- /* Fast path for identical mapping and presence. */
+- if ( !l4e_has_changed(ol4e, nl4e, _PAGE_PRESENT) )
++ /* Fast path for sufficiently-similar mappings. */
++ if ( !l4e_has_changed(ol4e, nl4e, ~FASTPATH_FLAG_WHITELIST) )
+ {
+ adjust_guest_l4e(nl4e, d);
+ rc = UPDATE_ENTRY(l4, pl4e, ol4e, nl4e, pfn, vcpu, preserve_ad);
+--- xen/include/asm-x86/page.h.orig 2014-09-02 08:22:57.000000000 +0200
++++ xen/include/asm-x86/page.h 2016-07-26 16:39:51.000000000 +0200
+@@ -332,6 +332,7 @@
+ #define _PAGE_AVAIL2 0x800U
+ #define _PAGE_AVAIL 0xE00U
+ #define _PAGE_PSE_PAT 0x1000U
++#define _PAGE_AVAIL_HIGH (0x7ffU << 12)
+ #define _PAGE_PAGED 0x2000U
+ #define _PAGE_SHARED 0x4000U
+
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