CVE-2015-7512: Debian Linux

Critical severity, CVSS 9.0. EPSS: 7.7% chance of exploitation in the next 30 days.

Buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU, when a guest NIC has a larger MTU, allows remote attackers to cause a denial of service (guest OS crash) or execute arbitrary code via a large packet.

Affected products

• Debian Debian Linux: version 7.0 only; version 8.0 only
• Oracle Linux: version 6 only
• Qemu Qemu: up to and including 2.4.1; version 2.5.0 only
• Red Hat Enterprise Linux Desktop: version 6.0 only
• Red Hat Enterprise Linux Eus: version 6.7 only
• Red Hat Enterprise Linux Server: version 6.0 only
• Red Hat Enterprise Linux Workstation: version 6.0 only
• Red Hat Openstack: version 5.0 only
• Red Hat Virtualization: version 3.0 only

Published 2016-01-08. Last modified 2026-06-17.