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    CVE-2014-7188

    The hvm_msr_read_intercept function in arch/x86/hvm/hvm.c in Xen 4.1 through 4.4.x uses an improper MSR range for x2APIC emulation, which allows local HVM guests to cause a denial of service (host crash) or read data from the hypervisor or other guests via unspecified vectors.

    Published:Oct 1, 2014
    Last Modified:Apr 12, 2025
    EPS:Oct 2, 2014
    EPSS Score:0.02548
    CVSS Score:8.3

    Affected Products

    Vendor
    Xen
    Product
    Xen

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-79603 (CVSS 4.3) — x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is on…
    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.fedoraproject.org/pipermail/package-announce/2014-October/140199.html
    http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140418.html
    http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140483.html
    http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html
    http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html
    http://secunia.com/advisories/61664
    http://secunia.com/advisories/61858
    http://secunia.com/advisories/61890
    http://security.gentoo.org/glsa/glsa-201412-42.xml
    http://support.citrix.com/article/CTX200218
    http://support.citrix.com/article/CTX201794
    http://www.c7zero.info/stuff/csw2017_ExploringYourSystemDeeper_updated.pdf
    http://www.debian.org/security/2014/dsa-3041
    http://www.securityfocus.com/bid/70198
    http://www.securitytracker.com/id/1030936
    http://xenbits.xen.org/xsa/advisory-108.html
    https://exchange.xforce.ibmcloud.com/vulnerabilities/96785
    http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140199.html
    http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140418.html
    http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140483.html
    http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html
    http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html
    http://secunia.com/advisories/61664
    http://secunia.com/advisories/61858
    http://secunia.com/advisories/61890
    http://security.gentoo.org/glsa/glsa-201412-42.xml
    http://support.citrix.com/article/CTX200218
    http://support.citrix.com/article/CTX201794
    http://www.c7zero.info/stuff/csw2017_ExploringYourSystemDeeper_updated.pdf
    http://www.debian.org/security/2014/dsa-3041
    http://www.securityfocus.com/bid/70198
    http://www.securitytracker.com/id/1030936
    http://xenbits.xen.org/xsa/advisory-108.html
    https://exchange.xforce.ibmcloud.com/vulnerabilities/96785

    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