Twenty Year Anniversary

Red Hat Security Advisory 2018-1369-01

Red Hat Security Advisory 2018-1369-01
Posted May 10, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-1369-01 - KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Issues addressed include out-of-bounds access.

tags | advisory
systems | linux, redhat
advisories | CVE-2018-7550, CVE-2018-7858
MD5 | 436f58ce6c3130ea7f966c619aebe7f6

Red Hat Security Advisory 2018-1369-01

Change Mirror Download
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
Red Hat Security Advisory

Synopsis: Moderate: qemu-kvm-rhev security and bug fix update
Advisory ID: RHSA-2018:1369-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2018:1369
Issue date: 2018-05-10
CVE Names: CVE-2018-7550 CVE-2018-7858
=====================================================================

1. Summary:

An update for qemu-kvm-rhev is now available for Red Hat Virtualization 4
for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts - ppc64le, x86_64

3. Description:

KVM (Kernel-based Virtual Machine) is a full virtualization solution for
Linux on a variety of architectures. The qemu-kvm-rhev packages provide the
user-space component for running virtual machines that use KVM in
environments managed by Red Hat products.

Security Fix(es):

* QEMU: i386: multiboot OOB access while loading kernel image
(CVE-2018-7550)

* QEMU: cirrus: OOB access when updating VGA display (CVE-2018-7858)

For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.

Red Hat would like to thank Cyrille Chatras (Orange.com) and CERT-CC
(Orange.com) for reporting CVE-2018-7550 and Ross Lagerwall (Citrix.com)
for reporting CVE-2018-7858.

Bug Fix(es):

* In certain Red Hat Virtualization (RHV) guest configurations, virtual
pass-through devices could not be removed properly. A reference count leak
in the QEMU emulator has been removed, and the affected devices are now
removed reliably. (BZ#1555213)

* Previously, a raw disk image that was using the "--preallocation=full"
option in some cases could not be resized. This problem has been fixed and
no longer occurs. (BZ#1566587)

* Due to race conditions in the virtio-blk and virtio-scsi services, the
QEMU emulator sometimes terminated unexpectedly when shutting down. The
race conditions have been removed, and QEMU now exits gracefully.
(BZ#1566586)

* Prior to this update, deleting guest snapshots using the RHV GUI in some
cases failed due to an incorrect image-seeking algorithm. This update fixes
the underlying code, and guest snapshots in RHV can now be deleted
successfully. (BZ#1566369)

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing this update, shut down all running virtual machines. Once
all virtual machines have shut down, start them again for this update to
take effect.

5. Bugs fixed (https://bugzilla.redhat.com/):

1549798 - CVE-2018-7550 QEMU: i386: multiboot OOB access while loading kernel image
1553402 - CVE-2018-7858 QEMU: cirrus: OOB access when updating VGA display
1555213 - [Q35] "DEVICE_DELETED" event didn't return after delete the second passthrough vf device [rhel-7.5.z]
1566369 - qemu-img commit fails with "block/file-posix.c:1774: find_allocation: Assertion `offs >= start' failed" [rhel-7.5.z]
1566586 - Occurred core dump with multi-object when quitted qemu during doing IO [rhel-7.5.z]
1566587 - Unable to resize image with preallocation=full mode [rhel-7.5.z]

6. Package List:

Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts:

Source:
qemu-kvm-rhev-2.10.0-21.el7_5.2.src.rpm

ppc64le:
qemu-img-rhev-2.10.0-21.el7_5.2.ppc64le.rpm
qemu-kvm-common-rhev-2.10.0-21.el7_5.2.ppc64le.rpm
qemu-kvm-rhev-2.10.0-21.el7_5.2.ppc64le.rpm
qemu-kvm-rhev-debuginfo-2.10.0-21.el7_5.2.ppc64le.rpm
qemu-kvm-tools-rhev-2.10.0-21.el7_5.2.ppc64le.rpm

x86_64:
qemu-img-rhev-2.10.0-21.el7_5.2.x86_64.rpm
qemu-kvm-common-rhev-2.10.0-21.el7_5.2.x86_64.rpm
qemu-kvm-rhev-2.10.0-21.el7_5.2.x86_64.rpm
qemu-kvm-rhev-debuginfo-2.10.0-21.el7_5.2.x86_64.rpm
qemu-kvm-tools-rhev-2.10.0-21.el7_5.2.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2018-7550
https://access.redhat.com/security/cve/CVE-2018-7858
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2018 Red Hat, Inc.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1

iD8DBQFa9G21XlSAg2UNWIIRAmgOAJ4r5Lw6uXQkppwAeKOvFFjnow4GywCgkDPa
q3JWDrWjmFbMgNQCwF4VK/M=
=CrX9
-----END PGP SIGNATURE-----

--
RHSA-announce mailing list
RHSA-announce@redhat.com
https://www.redhat.com/mailman/listinfo/rhsa-announce

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

October 2018

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Oct 1st
    26 Files
  • 2
    Oct 2nd
    15 Files
  • 3
    Oct 3rd
    15 Files
  • 4
    Oct 4th
    15 Files
  • 5
    Oct 5th
    15 Files
  • 6
    Oct 6th
    2 Files
  • 7
    Oct 7th
    3 Files
  • 8
    Oct 8th
    23 Files
  • 9
    Oct 9th
    16 Files
  • 10
    Oct 10th
    15 Files
  • 11
    Oct 11th
    19 Files
  • 12
    Oct 12th
    16 Files
  • 13
    Oct 13th
    2 Files
  • 14
    Oct 14th
    2 Files
  • 15
    Oct 15th
    15 Files
  • 16
    Oct 16th
    20 Files
  • 17
    Oct 17th
    19 Files
  • 18
    Oct 18th
    21 Files
  • 19
    Oct 19th
    16 Files
  • 20
    Oct 20th
    0 Files
  • 21
    Oct 21st
    0 Files
  • 22
    Oct 22nd
    0 Files
  • 23
    Oct 23rd
    0 Files
  • 24
    Oct 24th
    0 Files
  • 25
    Oct 25th
    0 Files
  • 26
    Oct 26th
    0 Files
  • 27
    Oct 27th
    0 Files
  • 28
    Oct 28th
    0 Files
  • 29
    Oct 29th
    0 Files
  • 30
    Oct 30th
    0 Files
  • 31
    Oct 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2018 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close