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Vulnerability record · CVE-2015-8551 · published 13 April 2016

CVE-2015-8551: Linux kernel null pointer dereference vulnerability

Linux · Linux Kernel

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."

6.0 CVSS 3.1 Medium EPSS 0.45% · top 63.0% CWE-476 · NULL pointer dereference
6.0CVSS 3.1 base score, v2 4.7
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
8Affected product versions listed by NVD
24References
17 Jun 2026Last modified by NVD

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."

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

Affected products

8 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Source: NIST National Vulnerability Database (record CVE-2015-8551), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.