CVE-2015-8551: Debian Linux

Medium severity, CVSS 6.0. EPSS: 0.5% chance of exploitation in the next 30 days.

The PCI backend driver in Xen, when running on an x86 system and using Linux 3.1.x through 4.3.x as the driver domain, allows local guest administrators to hit BUG conditions and cause a denial of service (NULL pointer dereference and host OS crash) by leveraging a system with access to a passed-through MSI or MSI-X capable physical PCI device and a crafted sequence of XEN_PCI_OP_* operations, aka "Linux pciback missing sanity checks."

Affected products

• Debian Debian Linux: version 7.0 only; version 8.0 only
• Linux Linux Kernel: from 3.1, up to and including 3.1.10; from 4.3.0, up to and including 4.3.6
• Opensuse Opensuse: version 13.1 only
• Suse Linux Enterprise Desktop: version 11 only; version 12 only
• Suse Linux Enterprise Real Time Extension: version 11 only; version 12 only
• Suse Linux Enterprise Server: version 11 only; version 12 only
• Suse Linux Enterprise Software Development Kit: version 11 only; version 12 only
• Suse Linux Enterprise Workstation Extension: version 12 only

Published 2016-04-13. Last modified 2026-06-17.