CVE-2014-7843

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    CVE-2014-7843

    Published: 30 Nov 2014Last Modified: 10 Apr 2026

    Summary:

    Details: The __clear_user function in arch/arm64/lib/clear_user.S in the Linux kernel before 3.17.4 on the ARM64 platform allows local users to cause a denial of service (system crash) by reading one byte beyond a /dev/zero page boundary.

    References: http://secunia.com/advisories/62305, http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.4, https://bugzilla.redhat.com/show_bug.cgi?id=1163744, https://github.com/torvalds/linux/commit/97fc15436b36ee3956efad83e22a557991f7d19d, https://bugzilla.redhat.com/show_bug.cgi?id=1163744, https://github.com/torvalds/linux/commit/97fc15436b36ee3956efad83e22a557991f7d19d, http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=97fc15436b36ee3956efad83e22a557991f7d19d, http://www.openwall.com/lists/oss-security/2014/11/13/5, http://www.securityfocus.com/bid/71082

    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