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    CVE-2014-1891

    Multiple integer overflows in the (1) FLASK_GETBOOL, (2) FLASK_SETBOOL, (3) FLASK_USER, and (4) FLASK_CONTEXT_TO_SID suboperations in the flask hypercall in Xen 4.3.x, 4.2.x, 4.1.x, 3.2.x, and earlier, when XSM is enabled, allow local users to cause a denial of service (processor fault) via unspecified vectors, a different vulnerability than CVE-2014-1892, CVE-2014-1893, and CVE-2014-1894.

    Published:Feb 6, 2014
    Last Modified:Apr 12, 2025
    EPS:Apr 1, 2014
    EPSS Score:0.00321
    CVSS Score:5.2

    Affected Products

    Vendor
    Xen
    Product
    Xen

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-190 Integer Overflow or Wraparound

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

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    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…
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    References

    http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00010.html
    http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html
    http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
    http://security.gentoo.org/glsa/glsa-201407-03.xml
    http://www.openwall.com/lists/oss-security/2014/02/07/12
    http://www.openwall.com/lists/oss-security/2014/02/07/4
    http://www.openwall.com/lists/oss-security/2014/02/10/8
    http://xenbits.xen.org/xsa/advisory-84.html
    http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00010.html
    http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html
    http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
    http://security.gentoo.org/glsa/glsa-201407-03.xml
    http://www.openwall.com/lists/oss-security/2014/02/07/12
    http://www.openwall.com/lists/oss-security/2014/02/07/4
    http://www.openwall.com/lists/oss-security/2014/02/10/8
    http://xenbits.xen.org/xsa/advisory-84.html

    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