UBUNTU-CVE-2020-29369

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    UBUNTU-CVE-2020-29369

    Published: 28 Nov 2020Last Modified: 9 Sept 2026
    Upstream:
    CVE-2020-29369
    Aliases:
    USN-4752-1

    Summary:

    Details: An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe.

    References: https://ubuntu.com/security/CVE-2020-29369, https://git.kernel.org/linus/246c320a8cfe0b11d81a4af38fa9985ef0cc9a4c, https://bugs.chromium.org/p/project-zero/issues/detail?id=2056, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.11, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=246c320a8cfe0b11d81a4af38fa9985ef0cc9a4c, https://ubuntu.com/security/notices/USN-4752-1, https://www.cve.org/CVERecord?id=CVE-2020-29369

    Affected packages

    Package

    Name: linux-hwe-edge

    Purl: pkg:deb/ubuntu/linux-hwe-edge?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    4.8.0-28.30~16.04.1
    4.8.0-30.32~16.04.1
    4.8.0-32.34~16.04.1
    4.8.0-34.36~16.04.1

    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-2020-29369 | CVE-DB