What’s Vulnerable › Vulnerabilities

CVE-2015-8552

• Severity: medium (CVSS 4.4 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-04-13 · updated 2026-06-17
• Weakness: CWE-20

Description

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 generate a continuous stream of WARN messages and cause a denial of service (disk consumption) by leveraging a system with access to a passed-through MSI or MSI-X capable physical PCI device and XEN_PCI_OP_enable_msi operations, aka "Linux pciback missing sanity checks."

Affected products

• Canonical Ubuntu Linux: 12.04
• Debian Linux: 6.0
• Novell Suse Linux Enterprise Debuginfo: 11-sp4
• Novell Suse Linux Enterprise Real Time Extension: 11-sp4, 12-sp1
• xen: 3.1.3, 3.1.4, 3.2.0, 3.2.1, 3.2.2, 3.2.3 (+32)

References

• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html
• http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html
• http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00059.html
• http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html
• http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html
• http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html
• http://www.debian.org/security/2016/dsa-3434
• http://www.securityfocus.com/bid/79546
• http://www.securitytracker.com/id/1034480
• http://xenbits.xen.org/xsa/advisory-157.html
• https://security.gentoo.org/glsa/201604-03

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