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    CVE-2012-3432

    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.

    Published:Jul 26, 2012
    Last Modified:Apr 11, 2025
    EPS:Dec 3, 2012
    EPSS Score:0.0142
    CVSS Score:1.9

    Affected Products

    Vendor
    Xen
    Product
    Xen

    Exploits

    http://lists.xen.org/archives/html/xen-devel/2012-07/msg01649.htmlhttp://lists.xen.org/archives/html/xen-devel/2012-07/msg01649.html

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-79602 (CVSS 8.8) — A guest with a PCI device assigned that has at least a BAR on the IO port space can trigger a BUG() in Xen.…
    CVE-2026-62437 (CVSS 6.5) — When guests are terminated, various pieces of cleanup need carrying out. The cleaning up of PCI devices which …
    CVE-2026-62434 (CVSS 5.3) — A guest started with Populated on Demand enabled (PoD) can attempt to reclaim pages which aren't regular guest…
    CVE-2026-62433 (CVSS 7.3) — Parts of the DM_OP handling code assumes the caller has provided the required number of buffers for the given …
    CVE-2026-62432 (CVSS 7.3) — The EVTCHNOP_expand_array hypercall checks for whether FIFO event channels are enabled, but without holding th…
    CVE-2026-62431 (CVSS 7.5) — The logic to handle periodic Viridian STIMERs performs a division with an unchecked user-controlled divisor va…
    CVE-2026-62430 (CVSS 7.5) — Accesses to the CMOS memory contents are done using an indirect IO port pair. Therefore Xen needs to cache th…
    CVE-2026-62429 (CVSS 6.5) — Accessing the vNUMA configuration data of a guest is still possible when domain destruction has already starte…
    CVE-2026-62436 (CVSS 6.5) — [This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities corresp…

    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
    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High