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    CVE-2018-20836

    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.

    Published:Sep 25, 2018
    Last Modified:Nov 21, 2024
    EPS:May 7, 2019
    EPSS Score:0.0199
    CVSS Score:8.1

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    F5
    Product
    Traffix Signaling Delivery Controller
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Netapp
    Product
    Active Iq Unified Manager
    Vendor
    Netapp
    Product
    Hci Compute Node
    Vendor
    Netapp
    Product
    Snapprotect
    Vendor
    Netapp
    Product
    Solidfire \& Hci Management Node
    Vendor
    Netapp
    Product
    Solidfire \& Hci Storage Node
    Vendor
    Netapp
    Product
    Storage Replication Adapter For Clustered Data Ontap
    Vendor
    Netapp
    Product
    Vasa Provider For Clustered Data Ontap
    Vendor
    Netapp
    Product
    Virtual Storage Console
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Extras Rt

    Exploits

    No exploit reference

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    References

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

    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