CVE-2015-2150

Severity: medium (CVSS 4.9 v2.0)
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: 2015-03-12 · updated 2026-06-17
Weakness: CWE-264

Description

Xen 3.3.x through 4.5.x and the Linux kernel through 3.19.1 do not properly restrict access to PCI command registers, which might allow local guest OS users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response.

Affected products

Linux kernel: through 3.19.1
Ubuntu: 12.04
xen: 3.3.0, 3.3.1, 3.3.2, 3.4.0, 3.4.1, 3.4.2 (+24)

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=af6fc858a35b90e89ea7a7ee58e66628c55c776b
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155804.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155854.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155908.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152747.html
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html
http://www.debian.org/security/2015/dsa-3237
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://www.securityfocus.com/bid/73014

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