CVE-2012-5375

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    CVE-2012-5375

    Published: 18 Feb 2013Last Modified: 10 Apr 2026

    Summary:

    Details: The CRC32C feature in the Btrfs implementation in the Linux kernel before 3.8-rc1 allows local users to cause a denial of service (prevention of file creation) by leveraging the ability to write to a directory important to the victim, and creating a file with a crafted name that is associated with a specific CRC32C hash value.

    References: http://www.ubuntu.com/usn/USN-1944-1, http://www.ubuntu.com/usn/USN-1945-1, http://www.ubuntu.com/usn/USN-1946-1, http://www.ubuntu.com/usn/USN-1947-1, http://www.ubuntu.com/usn/USN-2017-1, https://github.com/torvalds/linux/commit/9c52057c698fb96f8f07e7a4bcf4801a092bda89, http://www.kernel.org/pub/linux/kernel/v3.x/testing/patch-3.8-rc1.bz2, https://github.com/torvalds/linux/commit/9c52057c698fb96f8f07e7a4bcf4801a092bda89, http://crypto.junod.info/2012/12/13/hash-dos-and-btrfs/, http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9c52057c698fb96f8f07e7a4bcf4801a092bda89, http://openwall.com/lists/oss-security/2012/12/13/20

    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