CVE-2015-7295

Impact:
Moderate
Public Date:
2015-09-18
CWE:
CWE-772
Bugzilla:
1264381: CVE-2015-7295 Qemu: net: virtio-net possible remote DoS
A flaw has been discovered in the QEMU emulator built with Virtual Network Device(virtio-net) support. If the guest's virtio-net driver did not support big or mergeable receive buffers, an issue could occur while receiving large packets over the tuntap/ macvtap interfaces. An attacker on the local network could use this flaw to disable the guest's networking; the user could send a large number of jumbo frames to the guest, which could exhaust all receive buffers, and lead to a denial of service.

Find out more about CVE-2015-7295 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue affects the versions of kvm package as shipped with Red Hat Enterprise Linux 5.

This issue affects the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 6 and 7.

This issue affects the Red Hat Enterprise Linux 6 based versions of qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.

This issue affects the Red Hat Enterprise Linux 7 based versions of the qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 3.3
Base Metrics AV:A/AC:L/Au:N/C:N/I:N/A:P
Access Vector Adjacent Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Affected Packages State

Platform Package State
Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 qemu-kvm-rhev Will not fix
Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 qemu-kvm-rhev Will not fix
Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) qemu-kvm-rhev Will not fix
Red Hat Enterprise Linux 7 qemu-kvm-rhev Will not fix
Red Hat Enterprise Linux 7 qemu-kvm Will not fix
Red Hat Enterprise Linux 6 qemu-kvm Will not fix
Red Hat Enterprise Linux 5 kvm Will not fix
Red Hat Enterprise Linux 5 xen Not affected

Acknowledgements

This issue was discovered by Jason Wang of Red Hat Inc.

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact Red Hat Product Security.

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