UBUNTU-CVE-2018-17972

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    UBUNTU-CVE-2018-17972

    Published: 3 Oct 2018Last Modified: 22 Apr 2026
    Upstream:
    CVE-2018-17972
    Aliases:
    USN-3821-1
    USN-3821-2
    USN-3832-1

    Summary:

    Details: An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.

    References: https://ubuntu.com/security/CVE-2018-17972, https://marc.info/?l=linux-fsdevel&m=153806242024956&w=2, https://lore.kernel.org/patchwork/patch/992734/, https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=680d86b71ff9779f770758eaf9cadee98465223c, https://ubuntu.com/security/notices/USN-3821-1, https://ubuntu.com/security/notices/USN-3821-2, https://ubuntu.com/security/notices/USN-3832-1, https://ubuntu.com/security/notices/USN-3835-1, https://ubuntu.com/security/notices/USN-3871-1, https://ubuntu.com/security/notices/USN-3871-3, https://ubuntu.com/security/notices/USN-3871-4, https://ubuntu.com/security/notices/USN-3880-1, https://ubuntu.com/security/notices/USN-3880-2, https://ubuntu.com/security/notices/USN-3871-5, https://www.cve.org/CVERecord?id=CVE-2018-17972

    Affected packages

    Package

    Name: linux

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-165.215

    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
    UBUNTU-CVE-2018-17972 | CVE-DB