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    CVE-2009-4895

    Race condition in the tty_fasync function in drivers/char/tty_io.c in the Linux kernel before 2.6.32.6 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via unknown vectors, related to the put_tty_queue and __f_setown functions. NOTE: the vulnerability was addressed in a different way in 2.6.32.9.

    Published:Dec 17, 2009
    Last Modified:Apr 11, 2025
    EPS:Sep 8, 2010
    EPSS Score:0.00064
    CVSS Score:4.7

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Mrg

    Exploits

    No exploit reference

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    References

    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=703625118069f9f8960d356676662d3db5a9d116
    http://www.debian.org/security/2010/dsa-2094
    http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32.6
    http://www.openwall.com/lists/oss-security/2010/06/15/2
    http://www.openwall.com/lists/oss-security/2010/06/15/3
    http://www.openwall.com/lists/oss-security/2010/06/15/4
    http://www.openwall.com/lists/oss-security/2010/06/15/5
    http://www.ubuntu.com/usn/USN-1000-1
    https://bugzilla.kernel.org/show_bug.cgi?id=14605
    https://bugzilla.redhat.com/show_bug.cgi?id=559100
    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=703625118069f9f8960d356676662d3db5a9d116
    http://www.debian.org/security/2010/dsa-2094
    http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32.6
    http://www.openwall.com/lists/oss-security/2010/06/15/2
    http://www.openwall.com/lists/oss-security/2010/06/15/3
    http://www.openwall.com/lists/oss-security/2010/06/15/4
    http://www.openwall.com/lists/oss-security/2010/06/15/5
    http://www.ubuntu.com/usn/USN-1000-1
    https://bugzilla.kernel.org/show_bug.cgi?id=14605
    https://bugzilla.redhat.com/show_bug.cgi?id=559100

    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