UBUNTU-CVE-2020-29660

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    UBUNTU-CVE-2020-29660

    Published: 9 Dec 2020Last Modified: 9 Sept 2026
    Upstream:
    CVE-2020-29660
    Aliases:
    USN-4748-1
    USN-4749-1
    USN-4750-1

    Summary:

    Details: A locking inconsistency issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may allow a read-after-free attack against TIOCGSID, aka CID-c8bcd9c5be24.

    References: https://ubuntu.com/security/CVE-2020-29660, https://git.kernel.org/linus/c8bcd9c5be24fb9e6132e97da5a35e55a83e36b9, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c8bcd9c5be24fb9e6132e97da5a35e55a83e36b9, https://bugs.chromium.org/p/project-zero/issues/detail?id=2125, https://ubuntu.com/security/notices/USN-4748-1, https://ubuntu.com/security/notices/USN-4749-1, https://ubuntu.com/security/notices/USN-4750-1, https://ubuntu.com/security/notices/USN-4751-1, https://ubuntu.com/security/notices/USN-4752-1, https://ubuntu.com/security/notices/USN-5130-1, https://www.cve.org/CVERecord?id=CVE-2020-29660

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/linux?arch=source&distro=trusty%2Fesm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-188.239

    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-2020-29660 | CVE-DB