Issued:
2014-08-19
Updated:
2014-08-19

RHSA-2014:1075 - Security Advisory

Synopsis

Moderate: qemu-kvm security and bug fix update

Type/Severity

Security Advisory: Moderate

Topic

Updated qemu-kvm packages that fix two security issues and three bugs are
now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having Moderate security
impact. Common Vulnerability Scoring System (CVSS) base scores, which give
detailed severity ratings, are available for each vulnerability from the
CVE links in the References section.

Description

KVM (Kernel-based Virtual Machine) is a full virtualization solution for
Linux on AMD64 and Intel 64 systems. The qemu-kvm package provides the
user-space component for running virtual machines using KVM.

Two integer overflow flaws were found in the QEMU block driver for QCOW
version 1 disk images. A user able to alter the QEMU disk image files
loaded by a guest could use either of these flaws to corrupt QEMU process
memory on the host, which could potentially result in arbitrary code
execution on the host with the privileges of the QEMU process.
(CVE-2014-0222, CVE-2014-0223)

Red Hat would like to thank NSA for reporting these issues.

This update also fixes the following bugs:

  • In certain scenarios, when performing live incremental migration, the
    disk size could be expanded considerably due to the transfer of unallocated
    sectors past the end of the base image. With this update, the
    bdrv_is_allocated() function has been fixed to no longer return "True" for
    unallocated sectors, and the disk size no longer changes after performing
    live incremental migration. (BZ#1109715)
  • This update enables ioeventfd in virtio-scsi-pci. This allows QEMU to
    process I/O requests outside of the vCPU thread, reducing the latency of
    submitting requests and improving single task throughput. (BZ#1123271)
  • Prior to this update, vendor-specific SCSI commands issued from a KVM
    guest did not reach the target device due to QEMU considering such commands
    as invalid. This update fixes this bug by properly propagating
    vendor-specific SCSI commands to the target device. (BZ#1125131)

All qemu-kvm users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues. 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.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the
Red Hat Network to apply this update are available at
https://access.redhat.com/articles/11258

Affected Products

  • Red Hat Enterprise Linux Server 6 x86_64
  • Red Hat Enterprise Linux Server 6 i386
  • Red Hat Enterprise Linux Server - Extended Update Support 6.5 x86_64
  • Red Hat Enterprise Linux Server - Extended Update Support 6.5 i386
  • Red Hat Enterprise Linux Server - AUS 6.5 x86_64
  • Red Hat Enterprise Linux Workstation 6 x86_64
  • Red Hat Enterprise Linux Workstation 6 i386
  • Red Hat Enterprise Linux Desktop 6 x86_64
  • Red Hat Enterprise Linux Desktop 6 i386
  • Red Hat Enterprise Linux for Scientific Computing 6 x86_64
  • Red Hat Enterprise Linux Server from RHUI 6 x86_64
  • Red Hat Enterprise Linux Server from RHUI 6 i386
  • Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.5 x86_64
  • Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.5 i386
  • Red Hat Enterprise Linux EUS Compute Node 6.5 x86_64
  • Red Hat Enterprise Linux Server - TUS 6.5 x86_64

Fixes

  • BZ - 1097216 - CVE-2014-0222 Qemu: qcow1: validate L2 table size to avoid integer overflows
  • BZ - 1097222 - CVE-2014-0223 Qemu: qcow1: validate image size to avoid out-of-bounds memory access
  • BZ - 1109715 - live incremental migration of vm with common shared base, size(disk) > size(base) transfers unallocated sectors, explodes disk on dest
  • BZ - 1123271 - Enable ioenventfd for virtio-scsi-pci

CVEs

References

Red Hat Enterprise Linux Server 6

SRPM
qemu-kvm-0.12.1.2-2.415.el6_5.14.src.rpm SHA-256: 79921effafd82ed7ee15c25ed7fd14f0cfa14c12dbe737d8429841f353300028
x86_64
qemu-guest-agent-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: fcde0dbf1a0b24185ff17a67142d335b0f3057950f5419670b8494cf4d1e5633
qemu-img-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 1b383e47e087589233a60d620bfaa825975d0b02581dd64cc3eb203817de2a25
qemu-kvm-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 3508b89a175c8567638413b135ad56dca4ee3d54e6391d9c168ea125ff6b0102
qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 92e92aaba53504dba21696bfcf09751fa0c53a99687c9913e445e0dc78b4b37a
qemu-kvm-tools-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: a3337252b9cadbe759e141cb6868dfa8e53d350c0f6beca7e17931168319a77c
i386
qemu-guest-agent-0.12.1.2-2.415.el6_5.14.i686.rpm SHA-256: ddb7b9eacffc7b46cb85bd4690e67c98597fbb9d7f51a5d3fdb4ea21af9a4c82
qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.14.i686.rpm SHA-256: 08160848b11dca4b1b397e753164cf138f6570cf79e5dea4da8095465e06f995

Red Hat Enterprise Linux Server - Extended Update Support 6.5

SRPM
qemu-kvm-0.12.1.2-2.415.el6_5.14.src.rpm SHA-256: 79921effafd82ed7ee15c25ed7fd14f0cfa14c12dbe737d8429841f353300028
x86_64
qemu-guest-agent-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: fcde0dbf1a0b24185ff17a67142d335b0f3057950f5419670b8494cf4d1e5633
qemu-img-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 1b383e47e087589233a60d620bfaa825975d0b02581dd64cc3eb203817de2a25
qemu-kvm-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 3508b89a175c8567638413b135ad56dca4ee3d54e6391d9c168ea125ff6b0102
qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 92e92aaba53504dba21696bfcf09751fa0c53a99687c9913e445e0dc78b4b37a
qemu-kvm-tools-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: a3337252b9cadbe759e141cb6868dfa8e53d350c0f6beca7e17931168319a77c
i386
qemu-guest-agent-0.12.1.2-2.415.el6_5.14.i686.rpm SHA-256: ddb7b9eacffc7b46cb85bd4690e67c98597fbb9d7f51a5d3fdb4ea21af9a4c82
qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.14.i686.rpm SHA-256: 08160848b11dca4b1b397e753164cf138f6570cf79e5dea4da8095465e06f995

Red Hat Enterprise Linux Server - AUS 6.5

SRPM
qemu-kvm-0.12.1.2-2.415.el6_5.14.src.rpm SHA-256: 79921effafd82ed7ee15c25ed7fd14f0cfa14c12dbe737d8429841f353300028
x86_64
qemu-guest-agent-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: fcde0dbf1a0b24185ff17a67142d335b0f3057950f5419670b8494cf4d1e5633
qemu-img-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 1b383e47e087589233a60d620bfaa825975d0b02581dd64cc3eb203817de2a25
qemu-kvm-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 3508b89a175c8567638413b135ad56dca4ee3d54e6391d9c168ea125ff6b0102
qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 92e92aaba53504dba21696bfcf09751fa0c53a99687c9913e445e0dc78b4b37a
qemu-kvm-tools-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: a3337252b9cadbe759e141cb6868dfa8e53d350c0f6beca7e17931168319a77c

Red Hat Enterprise Linux Workstation 6

SRPM
qemu-kvm-0.12.1.2-2.415.el6_5.14.src.rpm SHA-256: 79921effafd82ed7ee15c25ed7fd14f0cfa14c12dbe737d8429841f353300028
x86_64
qemu-guest-agent-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: fcde0dbf1a0b24185ff17a67142d335b0f3057950f5419670b8494cf4d1e5633
qemu-img-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 1b383e47e087589233a60d620bfaa825975d0b02581dd64cc3eb203817de2a25
qemu-kvm-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 3508b89a175c8567638413b135ad56dca4ee3d54e6391d9c168ea125ff6b0102
qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 92e92aaba53504dba21696bfcf09751fa0c53a99687c9913e445e0dc78b4b37a
qemu-kvm-tools-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: a3337252b9cadbe759e141cb6868dfa8e53d350c0f6beca7e17931168319a77c
i386
qemu-guest-agent-0.12.1.2-2.415.el6_5.14.i686.rpm SHA-256: ddb7b9eacffc7b46cb85bd4690e67c98597fbb9d7f51a5d3fdb4ea21af9a4c82
qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.14.i686.rpm SHA-256: 08160848b11dca4b1b397e753164cf138f6570cf79e5dea4da8095465e06f995

Red Hat Enterprise Linux Desktop 6

SRPM
qemu-kvm-0.12.1.2-2.415.el6_5.14.src.rpm SHA-256: 79921effafd82ed7ee15c25ed7fd14f0cfa14c12dbe737d8429841f353300028
x86_64
qemu-guest-agent-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: fcde0dbf1a0b24185ff17a67142d335b0f3057950f5419670b8494cf4d1e5633
qemu-img-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 1b383e47e087589233a60d620bfaa825975d0b02581dd64cc3eb203817de2a25
qemu-kvm-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 3508b89a175c8567638413b135ad56dca4ee3d54e6391d9c168ea125ff6b0102
qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 92e92aaba53504dba21696bfcf09751fa0c53a99687c9913e445e0dc78b4b37a
qemu-kvm-tools-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: a3337252b9cadbe759e141cb6868dfa8e53d350c0f6beca7e17931168319a77c
i386
qemu-guest-agent-0.12.1.2-2.415.el6_5.14.i686.rpm SHA-256: ddb7b9eacffc7b46cb85bd4690e67c98597fbb9d7f51a5d3fdb4ea21af9a4c82
qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.14.i686.rpm SHA-256: 08160848b11dca4b1b397e753164cf138f6570cf79e5dea4da8095465e06f995

Red Hat Enterprise Linux for Scientific Computing 6

SRPM
qemu-kvm-0.12.1.2-2.415.el6_5.14.src.rpm SHA-256: 79921effafd82ed7ee15c25ed7fd14f0cfa14c12dbe737d8429841f353300028
x86_64
qemu-guest-agent-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: fcde0dbf1a0b24185ff17a67142d335b0f3057950f5419670b8494cf4d1e5633
qemu-img-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 1b383e47e087589233a60d620bfaa825975d0b02581dd64cc3eb203817de2a25
qemu-kvm-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 3508b89a175c8567638413b135ad56dca4ee3d54e6391d9c168ea125ff6b0102
qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 92e92aaba53504dba21696bfcf09751fa0c53a99687c9913e445e0dc78b4b37a
qemu-kvm-tools-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: a3337252b9cadbe759e141cb6868dfa8e53d350c0f6beca7e17931168319a77c

Red Hat Enterprise Linux Server from RHUI 6

SRPM
qemu-kvm-0.12.1.2-2.415.el6_5.14.src.rpm SHA-256: 79921effafd82ed7ee15c25ed7fd14f0cfa14c12dbe737d8429841f353300028
x86_64
qemu-guest-agent-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: fcde0dbf1a0b24185ff17a67142d335b0f3057950f5419670b8494cf4d1e5633
qemu-img-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 1b383e47e087589233a60d620bfaa825975d0b02581dd64cc3eb203817de2a25
qemu-kvm-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 3508b89a175c8567638413b135ad56dca4ee3d54e6391d9c168ea125ff6b0102
qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 92e92aaba53504dba21696bfcf09751fa0c53a99687c9913e445e0dc78b4b37a
qemu-kvm-tools-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: a3337252b9cadbe759e141cb6868dfa8e53d350c0f6beca7e17931168319a77c
i386
qemu-guest-agent-0.12.1.2-2.415.el6_5.14.i686.rpm SHA-256: ddb7b9eacffc7b46cb85bd4690e67c98597fbb9d7f51a5d3fdb4ea21af9a4c82
qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.14.i686.rpm SHA-256: 08160848b11dca4b1b397e753164cf138f6570cf79e5dea4da8095465e06f995

Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.5

SRPM
qemu-kvm-0.12.1.2-2.415.el6_5.14.src.rpm SHA-256: 79921effafd82ed7ee15c25ed7fd14f0cfa14c12dbe737d8429841f353300028
x86_64
qemu-guest-agent-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: fcde0dbf1a0b24185ff17a67142d335b0f3057950f5419670b8494cf4d1e5633
qemu-img-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 1b383e47e087589233a60d620bfaa825975d0b02581dd64cc3eb203817de2a25
qemu-kvm-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 3508b89a175c8567638413b135ad56dca4ee3d54e6391d9c168ea125ff6b0102
qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 92e92aaba53504dba21696bfcf09751fa0c53a99687c9913e445e0dc78b4b37a
qemu-kvm-tools-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: a3337252b9cadbe759e141cb6868dfa8e53d350c0f6beca7e17931168319a77c
i386
qemu-guest-agent-0.12.1.2-2.415.el6_5.14.i686.rpm SHA-256: ddb7b9eacffc7b46cb85bd4690e67c98597fbb9d7f51a5d3fdb4ea21af9a4c82
qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.14.i686.rpm SHA-256: 08160848b11dca4b1b397e753164cf138f6570cf79e5dea4da8095465e06f995

Red Hat Enterprise Linux EUS Compute Node 6.5

SRPM
qemu-kvm-0.12.1.2-2.415.el6_5.14.src.rpm SHA-256: 79921effafd82ed7ee15c25ed7fd14f0cfa14c12dbe737d8429841f353300028
x86_64
qemu-guest-agent-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: fcde0dbf1a0b24185ff17a67142d335b0f3057950f5419670b8494cf4d1e5633
qemu-img-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 1b383e47e087589233a60d620bfaa825975d0b02581dd64cc3eb203817de2a25
qemu-kvm-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 3508b89a175c8567638413b135ad56dca4ee3d54e6391d9c168ea125ff6b0102
qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 92e92aaba53504dba21696bfcf09751fa0c53a99687c9913e445e0dc78b4b37a
qemu-kvm-tools-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: a3337252b9cadbe759e141cb6868dfa8e53d350c0f6beca7e17931168319a77c

Red Hat Enterprise Linux Server - TUS 6.5

SRPM
qemu-kvm-0.12.1.2-2.415.el6_5.14.src.rpm SHA-256: 79921effafd82ed7ee15c25ed7fd14f0cfa14c12dbe737d8429841f353300028
x86_64
qemu-guest-agent-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: fcde0dbf1a0b24185ff17a67142d335b0f3057950f5419670b8494cf4d1e5633
qemu-img-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 1b383e47e087589233a60d620bfaa825975d0b02581dd64cc3eb203817de2a25
qemu-kvm-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 3508b89a175c8567638413b135ad56dca4ee3d54e6391d9c168ea125ff6b0102
qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: 92e92aaba53504dba21696bfcf09751fa0c53a99687c9913e445e0dc78b4b37a
qemu-kvm-tools-0.12.1.2-2.415.el6_5.14.x86_64.rpm SHA-256: a3337252b9cadbe759e141cb6868dfa8e53d350c0f6beca7e17931168319a77c

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