import libguestfs-1.44.0-9.module+el8.7.0+15868+7d816fcd

SOURCES/0022-lib-Disable-5-level-page-tables-when-using-cpu-max.patch

@@ -0,0 +1,92 @@
+From bb19cc0cdd43619ccf830e1e608f79e46f8ddf86 Mon Sep 17 00:00:00 2001
+From: "Richard W.M. Jones" <rjones@redhat.com>
+Date: Thu, 12 May 2022 08:36:37 +0100
+Subject: [PATCH] lib: Disable 5-level page tables when using -cpu max
+
+In https://bugzilla.redhat.com/show_bug.cgi?id=2082806 we've been
+tracking an insidious qemu bug which intermittently prevents the
+libguestfs appliance from starting.  The symptoms are that SeaBIOS
+starts and displays its messages, but the kernel isn't reached.  We
+found that the kernel does in fact start, but when it tries to set up
+page tables and jump to protected mode it gets a triple fault which
+causes the emulated CPU in qemu to reset (qemu exits).
+
+This seems to only affect TCG (not KVM).
+
+Yesterday I found that this is caused by using -cpu max which enables
+the "la57" feature (5-level page tables[0]), and that we can make the
+problem go away using -cpu max,la57=off.  Note that I still don't
+fully understand the qemu bug, so this is only a workaround.
+
+I chose to disable 5-level page tables for both TCG and KVM, partly to
+make the patch simpler, and partly because I guess it's not a feature
+(ie. 57 bit linear addresses) that is useful for the libguestfs
+appliance case, where we have limited physical memory and no need to
+run any programs with huge address spaces.
+
+I tested this by running both the direct & libvirt paths overnight.  I
+expect that this patch will fail with old qemu/libvirt which doesn't
+understand the "la57" feature, but this is only intended as a
+temporary workaround.
+
+[0] Article about 5-level page tables as background:
+https://lwn.net/Articles/717293/
+
+Thanks: Laszlo Ersek
+Fixes: https://answers.launchpad.net/ubuntu/+source/libguestfs/+question/701625
+
+[RHEL 8.7: Patch is not upstream.  This is the initial patch as posted
+to the mailing list here:
+https://listman.redhat.com/archives/libguestfs/2022-May/028853.html]
+---
+ lib/launch-direct.c  | 15 +++++++++++++--
+ lib/launch-libvirt.c |  7 +++++++
+ 2 files changed, 20 insertions(+), 2 deletions(-)
+
+diff --git a/lib/launch-direct.c b/lib/launch-direct.c
+index de17d2167..6b28e4724 100644
+--- a/lib/launch-direct.c
++++ b/lib/launch-direct.c
+@@ -534,8 +534,19 @@ launch_direct (guestfs_h *g, void *datav, const char *arg)
+   } end_list ();
+ 
+   cpu_model = guestfs_int_get_cpu_model (has_kvm && !force_tcg);
+-  if (cpu_model)
+-    arg ("-cpu", cpu_model);
++  if (cpu_model) {
++#if defined(__x86_64__)
++    /* Temporary workaround for RHBZ#2082806 */
++    if (STREQ (cpu_model, "max")) {
++      start_list ("-cpu") {
++        append_list (cpu_model);
++        append_list ("la57=off");
++      } end_list ();
++    }
++    else
++#endif
++      arg ("-cpu", cpu_model);
++  }
+ 
+   if (g->smp > 1)
+     arg_format ("-smp", "%d", g->smp);
+diff --git a/lib/launch-libvirt.c b/lib/launch-libvirt.c
+index db619910f..bad4a54ea 100644
+--- a/lib/launch-libvirt.c
++++ b/lib/launch-libvirt.c
+@@ -1172,6 +1172,13 @@ construct_libvirt_xml_cpu (guestfs_h *g,
+       else if (STREQ (cpu_model, "max")) {
+         /* https://bugzilla.redhat.com/show_bug.cgi?id=1935572#c11 */
+         attribute ("mode", "maximum");
++#if defined(__x86_64__)
++        /* Temporary workaround for RHBZ#2082806 */
++        start_element ("feature") {
++          attribute ("policy", "disable");
++          attribute ("name", "la57");
++        } end_element ();
++#endif
+       }
+       else
+         single_element ("model", cpu_model);
+-- 
+2.31.1
+

SOURCES/0023-docs-guestfs-security-document-CVE-2022-2211.patch

@@ -0,0 +1,103 @@
+From 22d779d5982dc82d629710d41973ed6545707bd9 Mon Sep 17 00:00:00 2001
+From: Laszlo Ersek <lersek@redhat.com>
+Date: Tue, 28 Jun 2022 13:54:16 +0200
+Subject: [PATCH] docs/guestfs-security: document CVE-2022-2211
+
+Short log for the common submodule, commit range
+f8de5508fe75..35467027f657:
+
+Laszlo Ersek (2):
+      mlcustomize: factor out pkg install/update/uninstall from guestfs-tools
+      options: fix buffer overflow in get_keys() [CVE-2022-2211]
+
+Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1809453
+Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2100862
+Signed-off-by: Laszlo Ersek <lersek@redhat.com>
+Message-Id: <20220628115418.5376-2-lersek@redhat.com>
+Reviewed-by: Richard W.M. Jones <rjones@redhat.com>
+
+Cherry picked from commit 99844660b48ed809e37378262c65d63df6ce4a53.
+For the cherry pick I only added one submodule commit:
+
+options: fix buffer overflow in get_keys() [CVE-2022-2211]
+---
+ common                    |  2 +-
+ docs/guestfs-security.pod | 28 ++++++++++++++++++++++++++++
+ 2 files changed, 29 insertions(+), 1 deletion(-)
+
+Submodule common be09523d6..1174b443a:
+diff --git a/common/options/keys.c b/common/options/keys.c
+index 798315c..d27a712 100644
+--- a/common/options/keys.c
++++ b/common/options/keys.c
+@@ -128,17 +128,23 @@ read_first_line_from_file (const char *filename)
+ char **
+ get_keys (struct key_store *ks, const char *device, const char *uuid)
+ {
+-  size_t i, j, len;
++  size_t i, j, nmemb;
+   char **r;
+   char *s;
+ 
+   /* We know the returned list must have at least one element and not
+    * more than ks->nr_keys.
+    */
+-  len = 1;
+-  if (ks)
+-    len = MIN (1, ks->nr_keys);
+-  r = calloc (len+1, sizeof (char *));
++  nmemb = 1;
++  if (ks && ks->nr_keys > nmemb)
++    nmemb = ks->nr_keys;
++
++  /* make room for the terminating NULL */
++  if (nmemb == (size_t)-1)
++    error (EXIT_FAILURE, 0, _("size_t overflow"));
++  nmemb++;
++
++  r = calloc (nmemb, sizeof (char *));
+   if (r == NULL)
+     error (EXIT_FAILURE, errno, "calloc");
+ 
+diff --git a/docs/guestfs-security.pod b/docs/guestfs-security.pod
+index 9ceef5623..efa35b29d 100644
+--- a/docs/guestfs-security.pod
++++ b/docs/guestfs-security.pod
+@@ -406,6 +406,34 @@ The libvirt backend is not affected.
+ The solution is to update qemu to a version containing the fix (see
+ L<https://lists.gnu.org/archive/html/qemu-devel/2018-06/msg01012.html>).
+ 
++=head2 CVE-2022-2211
++
++L<https://bugzilla.redhat.com/CVE-2022-2211>
++
++The C<get_keys> function in F<libguestfs-common/options/keys.c> collects
++those I<--key> options from the command line into a new array that match
++a particular block device that's being decrypted for inspection. The
++function intends to size the result array such that potentially all
++I<--key> options, plus a terminating C<NULL> element, fit into it. The
++code mistakenly uses the C<MIN> macro instead of C<MAX>, and therefore
++only one element is allocated before the C<NULL> terminator.
++
++Passing precisely two I<--key ID:...> options on the command line for
++the encrypted block device C<ID> causes C<get_keys> to overwrite the
++terminating C<NULL>, leading to an out-of-bounds read in
++C<decrypt_mountables>, file F<libguestfs-common/options/decrypt.c>.
++
++Passing more than two I<--key ID:...> options on the command line for
++the encrypted block device C<ID> causes C<get_keys> itself to perform
++out-of-bounds writes. The most common symptom is a crash with C<SIGSEGV>
++later on.
++
++This issue affects -- broadly speaking -- all libguestfs-based utilities
++that accept I<--key>, namely: C<guestfish>, C<guestmount>, C<virt-cat>,
++C<virt-customize>, C<virt-diff>, C<virt-edit>, C<virt-get-kernel>,
++C<virt-inspector>, C<virt-log>, C<virt-ls>, C<virt-sparsify>,
++C<virt-sysprep>, C<virt-tail>, C<virt-v2v>.
++
+ =head1 SEE ALSO
+ 
+ L<guestfs(3)>,
+-- 
+2.31.1
+

SPECS/libguestfs.spec

@@ -32,7 +32,7 @@ Summary:       Access and modify virtual machine disk images
 Name:          libguestfs
 Epoch:         1
 Version:       1.44.0
-Release:       6%{?dist}
+Release:       9%{?dist}
 License:       LGPLv2+
 
 ExclusiveArch: x86_64 %{power64} aarch64 s390x
@@ -71,6 +71,8 @@ Patch0018:     0018-lib-extract-NETWORK_ADDRESS-and-NETWORK_PREFIX-as-ma.patch
 Patch0019:     0019-launch-libvirt-add-virtio-net-via-the-standard-inter.patch
 Patch0020:     0020-appliance-Use-cpu-max.patch
 Patch0021:     0021-appliance-Use-cpu-mode-maximum-for-cpu-max-on-libvir.patch
+Patch0022:     0022-lib-Disable-5-level-page-tables-when-using-cpu-max.patch
+Patch0023:     0023-docs-guestfs-security-document-CVE-2022-2211.patch
 
 # Replacement README file.
 Source4:       README-replacement.in
@@ -230,7 +232,7 @@ BuildRequires: iputils
 %if !0%{?rhel}
 BuildRequires: jfsutils
 %endif
-BuildRequires: kernel
+BuildRequires: (kernel without kernel-debug-core)
 BuildRequires: kmod
 BuildRequires: kpartx
 BuildRequires: less
@@ -300,6 +302,12 @@ BuildRequires: zfs-fuse
 # to replace it with (eg) a fixed appliance.
 Requires:      (%{name}-appliance = %{epoch}:%{version}-%{release} or %{name}-noappliance)
 
+# libguestfs-benchmarking was accidentally present in RHEL AV 8.5 and
+# removed in RHEL 8.6+.  Add an Obsoletes to smooth the upgrade path
+# for anyone who had this package installed.
+# https://bugzilla.redhat.com/show_bug.cgi?id=2091597
+Obsoletes: %{name}-benchmarking < %{epoch}:%{version}-%{release}
+
 # The daemon dependencies are not included automatically, because it
 # is buried inside the appliance, so list them here.
 Requires:      augeas-libs%{?_isa}
@@ -1186,6 +1194,19 @@ rm ocaml/html/.gitignore
 
 
 %changelog
+* Tue Jul 05 2022 Richard W.M. Jones <rjones@redhat.com> - 1:1.44.0-9
+- Fix CVE-2022-2211 Denial of Service in --key parameter
+  resolves: rhbz#2101280
+
+* Tue Jun 07 2022 Richard W.M. Jones <rjones@redhat.com> - 1:1.44.0-8
+- Obsolete old libguestfs-benchmarking subpackage
+  resolves: rhbz#2091597
+
+* Thu May 12 2022 Richard W.M. Jones <rjones@redhat.com> - 1:1.44.0-7
+- Disable 5-level page tables when using -cpu max
+  resolves: rhbz#2084566
+  related: rhbz#2075424
+
 * Thu Apr 14 2022 Richard W.M. Jones <rjones@redhat.com> - 1:1.44.0-6
 - Backport support for -cpu max to allow RHEL 9 guests to be modified
   resolves: rhbz#2075424