CVE-2012-3432

Severity: low (CVSS 1.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2012-12-03 · updated 2026-06-16
Weakness: CWE-264

Description

The handle_mmio function in arch/x86/hvm/io.c in the MMIO operations emulator for Xen 3.3 and 4.x, when running an HVM guest, does not properly reset certain state information between emulation cycles, which allows local guest OS users to cause a denial of service (guest OS crash) via unspecified operations on MMIO regions.

Affected products

xen: 3.3.0, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4 (+5)

References

http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00024.html
http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00025.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html
http://lists.xen.org/archives/html/xen-devel/2012-07/msg01649.html
http://secunia.com/advisories/55082
http://security.gentoo.org/glsa/glsa-201309-24.xml
http://www.debian.org/security/2012/dsa-2531
http://www.securityfocus.com/bid/54691
http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00024.html
http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00025.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html

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