CVE-2015-2666

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    CVE-2015-2666

    Published: 27 May 2015Last Modified: 10 Apr 2026

    Summary:

    Details: Stack-based buffer overflow in the get_matching_model_microcode function in arch/x86/kernel/cpu/microcode/intel_early.c in the Linux kernel before 4.0 allows context-dependent attackers to gain privileges by constructing a crafted microcode header and leveraging root privileges for write access to the initrd.

    References: http://lists.fedoraproject.org/pipermail/package-announce/2015-March/153329.html, http://rhn.redhat.com/errata/RHSA-2015-1534.html, http://www.securitytracker.com/id/1032414, http://www.openwall.com/lists/oss-security/2015/03/20/18, https://github.com/torvalds/linux/commit/f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4, https://bugzilla.redhat.com/show_bug.cgi?id=1204722, http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4

    Affected packages

    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
    CVE-2015-2666 | CVE-DB