What’s Vulnerable › Vulnerabilities

CVE-2015-8551

• Severity: medium (CVSS 6.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% 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-476

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 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 Linux: 7.0, 8.0
• Linux kernel: from 3.1 through 3.1.10; from 4.3.0 through 4.3.6
• Opensuse: 13.1
• SUSE Linux Enterprise Server 15 SP1: 11-sp4, 12-sp1
• SUSE Linux Enterprise Real Time Extension: 11-sp4, 12-sp1
• SUSE Linux Enterprise Server: 11, 11-sp4, 12-sp1
• SUSE Linux Enterprise Software Development Kit: 11-sp4, 12-sp1
• SUSE Linux Enterprise Workstation Extension: 12-sp1

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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