CVE-2018-20836

    Dashboard / Vulnerabilities / CVE-2018-20836

    CVE-2018-20836

    Published: 7 May 2019Last Modified: 2 Apr 2026

    Summary:

    Details: An issue was discovered in the Linux kernel before 4.20. There is a race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c, leading to a use-after-free.

    References: https://support.f5.com/csp/article/K11225249, https://usn.ubuntu.com/4076-1/, https://www.debian.org/security/2019/dsa-4495, http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html, https://seclists.org/bugtraq/2019/Aug/13, https://seclists.org/bugtraq/2019/Aug/18, https://security.netapp.com/advisory/ntap-20190719-0003/, https://www.debian.org/security/2019/dsa-4497, http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00014.html, http://www.securityfocus.com/bid/108196, https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html, https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html, https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b90cd6f2b905905fb42671009dc0e27c310a16ae, https://github.com/torvalds/linux/commit/b90cd6f2b905905fb42671009dc0e27c310a16ae

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -b90cd6f2b905905fb42671009dc0e27c310a16ae

    Affected versions

    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