SB2015013016 - Ubuntu update for qemu, qemu-kvm
Published: January 30, 2015 Updated: October 30, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Buffer overflow (CVE-ID: CVE-2013-4344)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 7.3 [CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in the SCSI implementation in QEMU when a SCSI controller has more than 256 attached devices. A local user can gain privileges via a small transfer buffer in a REPORT LUNS command.
2) Resource management error (CVE-ID: CVE-2013-4375)
CWE-ID: CWE-399 - Resource Management Errors
CVSSv4: 4.8 [CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote #AU# to perform service disruption.
The qdisk PV disk backend in qemu-xen in Xen 4.2.x and 4.3.x before 4.3.1, and qemu 1.1 and other versions, allows local HVM guests to cause a denial of service (domain grant reference consumption) via unspecified vectors.
3) Resource management error (CVE-ID: CVE-2013-4377)
CWE-ID: CWE-399 - Resource Management Errors
CVSSv4: 4.8 [CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote #AU# to perform service disruption.
Use-after-free vulnerability in the virtio-pci implementation in Qemu 1.4.0 through 1.6.0 allows local users to cause a denial of service (daemon crash) by "hot-unplugging" a virtio device.
Remediation
Install update from vendor's website.