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    CVE-2001-1559

    The uipc system calls (uipc_syscalls.c) in OpenBSD 2.9 and 3.0 provide user mode return instead of versus rval kernel mode values to the fdrelease function, which allows local users to cause a denial of service and trigger a null dereference.

    Published:Dec 31, 2001
    Last Modified:Apr 16, 2026
    EPS:Jul 14, 2005
    EPSS Score:0.0038
    CVSS Score:5.5

    Affected Products

    Vendor
    Openbsd
    Product
    Openbsd

    Exploits

    http://archives.neohapsis.com/archives/bugtraq/2001-12/0014.htmlhttp://monkey.org/openbsd/archive/tech/0112/msg00015.htmlhttp://archives.neohapsis.com/archives/bugtraq/2001-12/0014.htmlhttp://monkey.org/openbsd/archive/tech/0112/msg00015.htmlhttps://www.exploit-db.com/exploits/21167

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    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