UBUNTU-CVE-2017-7495

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    UBUNTU-CVE-2017-7495

    Published: 15 May 2017Last Modified: 22 Apr 2026
    Upstream:
    CVE-2017-7495
    Aliases:
    USN-3405-1
    USN-3405-2
    USN-3406-1

    Summary:

    Details: fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, which allows local users to obtain sensitive information from other users' files in opportunistic circumstances by waiting for a hardware reset, creating a new file, making write system calls, and reading this file.

    References: https://ubuntu.com/security/CVE-2017-7495, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06bd3c36a733ac27962fea7d6f47168841376824, http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.2, http://www.openwall.com/lists/oss-security/2017/05/15/2, https://bugzilla.redhat.com/show_bug.cgi?id=1450261, https://github.com/torvalds/linux/commit/06bd3c36a733ac27962fea7d6f47168841376824, https://ubuntu.com/security/notices/USN-3406-1, https://ubuntu.com/security/notices/USN-3405-1, https://ubuntu.com/security/notices/USN-3405-2, https://ubuntu.com/security/notices/USN-3406-2, https://www.cve.org/CVERecord?id=CVE-2017-7495

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-129.178

    Affected versions

    3.11.0-12.19

    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