CVE-2015-8554

Severity: high (CVSS 7.5 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: 2016-04-14 · updated 2026-06-17
Weakness: CWE-119

Description

Buffer overflow in hw/pt-msi.c in Xen 4.6.x and earlier, when using the qemu-xen-traditional (aka qemu-dm) device model, allows local x86 HVM guest administrators to gain privileges by leveraging a system with access to a passed-through MSI-X capable physical PCI device and MSI-X table entries, related to a "write path."

Affected products

xen: through 4.6.1

References

http://support.citrix.com/article/CTX203879
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
http://www.securityfocus.com/bid/79579
http://www.securitytracker.com/id/1034481
http://xenbits.xen.org/xsa/advisory-164.html
https://security.gentoo.org/glsa/201604-03
http://support.citrix.com/article/CTX203879
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
http://www.securityfocus.com/bid/79579
http://www.securitytracker.com/id/1034481
http://xenbits.xen.org/xsa/advisory-164.html
https://security.gentoo.org/glsa/201604-03

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