- Issued:
- 2015-05-13
- Updated:
- 2015-05-13
RHSA-2015:0999 - Important: qemu-kvm security update
Synopsis
Important: qemu-kvm security update
Type/Severity
Security Advisory Important
Topic
Updated qemu-kvm packages that fix one security issue are now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link 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.
An out-of-bounds memory access flaw was found in the way QEMU's virtual Floppy Disk Controller (FDC) handled FIFO buffer access while processing certain FDC commands. A privileged guest user could use this flaw to crash the guest or, potentially, execute arbitrary code on the host with the privileges of the host's QEMU process corresponding to the guest. (CVE-2015-3456)
Red Hat would like to thank Jason Geffner of CrowdStrike for reporting this issue.
All qemu-kvm users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. 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.
For details on how to apply this update, refer to:
https://access.redhat.com/articles/11258
Affected Products
| Product | Version | Arch |
|---|---|---|
| Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions | 7.7 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions | 7.6 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions | 7.4 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions | 7.3 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions | 7.2 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 7.7 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 7.6 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 7.5 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 7.4 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 7.3 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 7.2 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 7.1 | x86_64 |
| Red Hat Enterprise Linux for Scientific Computing | 7 | x86_64 |
| Red Hat Enterprise Linux for Power, big endian | 7 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 7.7 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 7.6 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 7.5 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 7.4 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 7.3 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 7.2 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 7.1 | ppc64 |
| Red Hat Enterprise Linux Workstation | 7 | x86_64 |
| Red Hat Enterprise Linux Server | 7 | x86_64 |
| Red Hat Enterprise Linux Server from RHUI | 7 | x86_64 |
| Red Hat Enterprise Linux Server - TUS | 7.7 | x86_64 |
| Red Hat Enterprise Linux Server - TUS | 7.6 | x86_64 |
| Red Hat Enterprise Linux Server - TUS | 7.3 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support | 7 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian | 7 | ppc64 |
| Red Hat Enterprise Linux Server - AUS | 7.7 | x86_64 |
| Red Hat Enterprise Linux Server - AUS | 7.6 | x86_64 |
| Red Hat Enterprise Linux Server - AUS | 7.4 | x86_64 |
| Red Hat Enterprise Linux Server - AUS | 7.3 | x86_64 |
| Red Hat Enterprise Linux EUS Compute Node | 7.7 | x86_64 |
| Red Hat Enterprise Linux EUS Compute Node | 7.6 | x86_64 |
| Red Hat Enterprise Linux EUS Compute Node | 7.5 | x86_64 |
| Red Hat Enterprise Linux EUS Compute Node | 7.4 | x86_64 |
| Red Hat Enterprise Linux EUS Compute Node | 7.3 | x86_64 |
| Red Hat Enterprise Linux EUS Compute Node | 7.2 | x86_64 |
| Red Hat Enterprise Linux EUS Compute Node | 7.1 | x86_64 |
| Red Hat Enterprise Linux Desktop | 7 | x86_64 |
Updated Packages
- qemu-kvm-debuginfo-1.5.3-86.el7_1.2.i686.rpm
- libcacard-1.5.3-86.el7_1.2.ppc64.rpm
- qemu-kvm-debuginfo-1.5.3-86.el7_1.2.ppc.rpm
- qemu-kvm-tools-1.5.3-86.el7_1.2.x86_64.rpm
- libcacard-tools-1.5.3-86.el7_1.2.x86_64.rpm
- qemu-kvm-debuginfo-1.5.3-86.el7_1.2.ppc64.rpm
- qemu-kvm-debuginfo-1.5.3-86.el7_1.2.x86_64.rpm
- qemu-img-1.5.3-86.el7_1.2.x86_64.rpm
- libcacard-1.5.3-86.el7_1.2.ppc.rpm
- qemu-kvm-common-1.5.3-86.el7_1.2.x86_64.rpm
- qemu-kvm-1.5.3-86.el7_1.2.x86_64.rpm
- libcacard-devel-1.5.3-86.el7_1.2.i686.rpm
- qemu-img-1.5.3-86.el7_1.2.ppc64.rpm
- libcacard-devel-1.5.3-86.el7_1.2.x86_64.rpm
- libcacard-devel-1.5.3-86.el7_1.2.ppc64.rpm
- libcacard-1.5.3-86.el7_1.2.x86_64.rpm
- libcacard-devel-1.5.3-86.el7_1.2.ppc.rpm
- libcacard-1.5.3-86.el7_1.2.i686.rpm
- libcacard-tools-1.5.3-86.el7_1.2.ppc64.rpm
Fixes
CVEs
References
Additional information
- The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
- Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.