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    CVE-2012-0045

    The em_syscall function in arch/x86/kvm/emulate.c in the KVM implementation in the Linux kernel before 3.2.14 does not properly handle the 0f05 (aka syscall) opcode, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application, as demonstrated by an NASM file.

    Published:Dec 29, 2011
    Last Modified:Apr 11, 2025
    EPS:Jul 3, 2012
    EPSS Score:0.00564
    CVSS Score:4.7

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    http://www.openwall.com/lists/oss-security/2012/01/12/2https://bugzilla.redhat.com/show_bug.cgi?id=773370https://github.com/torvalds/linux/commit/c2226fc9e87ba3da060e47333657cd6616652b84http://www.openwall.com/lists/oss-security/2012/01/12/2https://bugzilla.redhat.com/show_bug.cgi?id=773370https://github.com/torvalds/linux/commit/c2226fc9e87ba3da060e47333657cd6616652b84https://www.exploit-db.com/exploits/36545

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c2226fc9e87ba3da060e47333657cd6616652b84
    http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
    http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.14
    http://www.openwall.com/lists/oss-security/2012/01/12/2
    https://bugzilla.redhat.com/show_bug.cgi?id=773370
    https://github.com/torvalds/linux/commit/c2226fc9e87ba3da060e47333657cd6616652b84
    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c2226fc9e87ba3da060e47333657cd6616652b84
    http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
    http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.14
    http://www.openwall.com/lists/oss-security/2012/01/12/2
    https://bugzilla.redhat.com/show_bug.cgi?id=773370
    https://github.com/torvalds/linux/commit/c2226fc9e87ba3da060e47333657cd6616652b84

    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