Debian Security Advisory
DLA-574-1 qemu-kvm -- LTS security update
- Date Reported:
- 30 Jul 2016
- Affected Packages:
- Security database references:
- In Mitre's CVE dictionary: CVE-2015-5239, CVE-2016-2857, CVE-2016-4020, CVE-2016-4439, CVE-2016-5403, CVE-2016-6351.
- More information:
Multiple vulnerabilities have been discovered in qemu-kvm, a full virtualization solution on x86 hardware. The Common Vulnerabilities and Exposures project identifies the following problems:
Lian Yihan discovered that QEMU incorrectly handled certain payload messages in the VNC display driver. A malicious guest could use this issue to cause the QEMU process to hang, resulting in a denial of service.
Ling Liu discovered that QEMU incorrectly handled IP checksum routines. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly leak host memory bytes.
Donghai Zdh discovered that QEMU incorrectly handled the Task Priority Register(TPR). A privileged attacker inside the guest could use this issue to possibly leak host memory bytes.
- CVE-2016-4439 /
Li Qiang disovered that the emulation of the 53C9X Fast SCSI Controller is affected by out of bound access issues.
Zhenhao Hong discovered that a malicious guest administrator can cause unbounded memory allocation in QEMU (which can cause an Out-of-Memory condition) by submitting virtio requests without bothering to wait for completion.
For Debian 7
Wheezy, these problems have been fixed in version 1.1.2+dfsg-6+deb7u14.
We recommend that you upgrade your qemu-kvm packages.
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS