CVE-2015-4103

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

Description

Xen 3.3.x through 4.5.x does not properly restrict write access to the host MSI message data field, which allows local x86 HVM guest administrators to cause a denial of service (host interrupt handling confusion) via vectors related to qemu and accessing spanning multiple fields.

Affected products

xen: 3.3.0, 3.3.1, 3.3.2, 3.4.0, 3.4.1, 3.4.2 (+24)

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160154.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160171.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160685.html
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html
http://support.citrix.com/article/CTX201145
http://www.debian.org/security/2015/dsa-3284
http://www.debian.org/security/2015/dsa-3286
http://www.securityfocus.com/bid/74947
http://www.securitytracker.com/id/1032456

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