UBUNTU-CVE-2018-7757

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    UBUNTU-CVE-2018-7757

    Published: 8 Mar 2018Last Modified: 22 Apr 2026
    Upstream:
    CVE-2018-7757
    Aliases:
    USN-3654-1
    USN-3654-2
    USN-3656-1

    Summary:

    Details: Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (memory consumption) via many read accesses to files in the /sys/class/sas_phy directory, as demonstrated by the /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file.

    References: https://ubuntu.com/security/CVE-2018-7757, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4a491b1ab11ca0556d2fda1ff1301e862a2d44c4, https://ubuntu.com/security/notices/USN-3654-1, https://ubuntu.com/security/notices/USN-3654-2, https://ubuntu.com/security/notices/USN-3656-1, https://ubuntu.com/security/notices/USN-3697-1, https://ubuntu.com/security/notices/USN-3697-2, https://ubuntu.com/security/notices/USN-3698-1, https://ubuntu.com/security/notices/USN-3698-2, https://www.cve.org/CVERecord?id=CVE-2018-7757

    Affected packages

    Package

    Name: linux

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-153.203

    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