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    CVE-2004-2536

    The exit_thread function (process.c) in Linux kernel 2.6 through 2.6.5 does not invalidate the per-TSS io_bitmap pointers if a process obtains IO access permissions from the ioperm function but does not drop those permissions when it exits, which allows other processes to access the per-TSS pointers, access restricted memory locations, and possibly gain privileges.

    Published:Dec 31, 2004
    Last Modified:Apr 16, 2026
    EPS:Oct 25, 2005
    EPSS Score:0.00482
    CVSS Score:7.5

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel

    Exploits

    http://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1242.htmlhttp://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1242.html

    Common Weakness Enumeration

    No CWE recorded yet

    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