CVE-2011-4127

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    CVE-2011-4127

    Published: 3 Jul 2012Last Modified: 10 Apr 2026

    Summary:

    Details: The Linux kernel before 3.2.2 does not properly restrict SG_IO ioctl calls, which allows local users to bypass intended restrictions on disk read and write operations by sending a SCSI command to (1) a partition block device or (2) an LVM volume.

    References: http://secunia.com/advisories/48898, https://github.com/torvalds/linux/commit/0bfc96cb77224736dfa35c3c555d37b3646ef35e, https://github.com/torvalds/linux/commit/ec8013beddd717d1740cfefb1a9b900deef85462, https://github.com/torvalds/linux/commit/0bfc96cb77224736dfa35c3c555d37b3646ef35e, https://github.com/torvalds/linux/commit/ec8013beddd717d1740cfefb1a9b900deef85462, https://bugzilla.redhat.com/show_bug.cgi?id=752375, http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0bfc96cb77224736dfa35c3c555d37b3646ef35e, http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ec8013beddd717d1740cfefb1a9b900deef85462, http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html, http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html, http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2, http://www.openwall.com/lists/oss-security/2011/12/22/5

    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