RedHat: RHSA-2020-0100:01 Important: kernel-rt security and bug fix update

    Date 13 Jan 2020
    493
    Posted By LinuxSecurity Advisories
    An update for kernel-rt is now available for Red Hat Enterprise MRG 2. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability
    -----BEGIN PGP SIGNED MESSAGE-----
    Hash: SHA256
    
    =====================================================================
                       Red Hat Security Advisory
    
    Synopsis:          Important: kernel-rt security and bug fix update
    Advisory ID:       RHSA-2020:0100-01
    Product:           Red Hat Enterprise MRG for RHEL-6
    Advisory URL:      https://access.redhat.com/errata/RHSA-2020:0100
    Issue date:        2020-01-14
    CVE Names:         CVE-2018-18281 CVE-2018-20856 CVE-2019-11599 
    =====================================================================
    
    1. Summary:
    
    An update for kernel-rt is now available for Red Hat Enterprise MRG 2.
    
    Red Hat Product Security has rated this update as having a security impact
    of Important. A Common Vulnerability Scoring System (CVSS) base score,
    which gives a detailed severity rating, is available for each vulnerability
    from the CVE link(s) in the References section.
    
    2. Relevant releases/architectures:
    
    Red Hat MRG Realtime for RHEL 6 Server v.2 - noarch, x86_64
    
    3. Description:
    
    The kernel-rt packages provide the Real Time Linux Kernel, which enables
    fine-tuning for systems with extremely high determinism requirements.
    
    Security Fix(es):
    
    * kernel: Use-after-free in __blk_drain_queue() function in
    block/blk-core.c (CVE-2018-20856)
    
    * kernel: TLB flush happens too late on mremap (CVE-2018-18281)
    
    * kernel: fix race condition between mmget_not_zero()/get_task_mm() and
    core dumping (CVE-2019-11599)
    
    For more details about the security issue(s), including the impact, a CVSS
    score, acknowledgments, and other related information, refer to the CVE
    page(s) listed in the References section.
    
    Bug Fix(es):
    
    * update the MRG 2.5.z 3.10 realtime-kernel sources (BZ#1779367)
    
    4. Solution:
    
    For details on how to apply this update, which includes the changes
    described in this advisory, refer to:
    
    https://access.redhat.com/articles/11258
    
    The system must be rebooted for this update to take effect.
    
    5. Bugs fixed (https://bugzilla.redhat.com/):
    
    1645121 - CVE-2018-18281 kernel: TLB flush happens too late on mremap
    1705937 - CVE-2019-11599 kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping
    1738705 - CVE-2018-20856 kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c
    1779367 - update the MRG 2.5.z 3.10 realtime-kernel sources
    
    6. Package List:
    
    Red Hat MRG Realtime for RHEL 6 Server v.2:
    
    Source:
    kernel-rt-3.10.0-693.62.1.rt56.659.el6rt.src.rpm
    
    noarch:
    kernel-rt-doc-3.10.0-693.62.1.rt56.659.el6rt.noarch.rpm
    kernel-rt-firmware-3.10.0-693.62.1.rt56.659.el6rt.noarch.rpm
    
    x86_64:
    kernel-rt-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
    kernel-rt-debug-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
    kernel-rt-debug-debuginfo-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
    kernel-rt-debug-devel-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
    kernel-rt-debuginfo-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
    kernel-rt-debuginfo-common-x86_64-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
    kernel-rt-devel-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
    kernel-rt-trace-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
    kernel-rt-trace-debuginfo-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
    kernel-rt-trace-devel-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
    kernel-rt-vanilla-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
    kernel-rt-vanilla-debuginfo-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
    kernel-rt-vanilla-devel-3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
    
    These packages are GPG signed by Red Hat for security.  Our key and
    details on how to verify the signature are available from
    https://access.redhat.com/security/team/key/
    
    7. References:
    
    https://access.redhat.com/security/cve/CVE-2018-18281
    https://access.redhat.com/security/cve/CVE-2018-20856
    https://access.redhat.com/security/cve/CVE-2019-11599
    https://access.redhat.com/security/updates/classification/#important
    
    8. Contact:
    
    The Red Hat security contact is . More contact
    details at https://access.redhat.com/security/team/contact/
    
    Copyright 2020 Red Hat, Inc.
    -----BEGIN PGP SIGNATURE-----
    Version: GnuPG v1
    
    iQIVAwUBXh12MtzjgjWX9erEAQjtWBAAh5K8Ruvl6tD2ACeBGlxi7ljhIXffbMU0
    aCgpYa/lCMuhiUoMuSG49bCBuE0jLSxLK9QWa4ksEyBySQv6QNb9huOImDx7ELVh
    qAEgYyU7vW/T9p2gGnFeO9FE9HtHG1xWe8y45vyyDkbq+zUFaEQdFC/8UGQA1TII
    ALk8uBQ+4A9j6A0ukSGeAt2Te8ra0gp/VXYVP7TRrNBTEvshdFThiyYcTYqmGNz1
    LtmlUj9lSEuwKn5yjjq3VYcfUe0xe9Sdyr70g7YJKWw9DwgDLKTte6wHmrUw85Ah
    7Nix7UD+ycMSBIckUTqeysbrG1zfTWclRNRAIeESg4ky0CmlLqSL2UKPDsy4StAs
    N4Ufue4uryLpQlQY0JGk8TbSxjsE5ZMIVUCj9RTnAlSDSM+V0p1f0cftJhiUgj6I
    7uRqCABnOySogupuQoWkXUYfgwkwJ920x0HdIHoVK1NubQJug74FYRjRnGGXGjAP
    aaMf9rFfQmR7XSYiNZeRWumaUoTNrkK91fsVocZeqOkb1/Dcv5eW9LtsMW3s/5qz
    cdSCnggFg0eCspJTNbBe8sSrOI7RS229YqFqBDy78+ESZEOULAyqxQMD8KWyQc7P
    GPa89I4OQUQMgsYlOz1qx9IG97oY0KLDKlh4oGZ2AYHQxFImxLXKB4II3EQ/eXKk
    sXlKGoU0QJI=
    =uCtl
    -----END PGP SIGNATURE-----
    
    --
    RHSA-announce mailing list
    This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.redhat.com/mailman/listinfo/rhsa-announce
    

    LinuxSecurity Poll

    If you are using full-disk encryption: are you concerned about the resulting performance hit?

    No answer selected. Please try again.
    Please select either existing option or enter your own, however not both.
    Please select minimum 0 answer(s) and maximum 2 answer(s).
    /main-polls/34-if-you-are-using-full-disk-encryption-are-you-concerned-about-the-resulting-performance-hit?task=poll.vote&format=json
    34
    radio
    [{"id":"120","title":"Yes","votes":"13","type":"x","order":"1","pct":65,"resources":[]},{"id":"121","title":"No ","votes":"7","type":"x","order":"2","pct":35,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
    bottom 200

    Advisories

    Please enable / Bitte aktiviere JavaScript!
    Veuillez activer / Por favor activa el Javascript![ ? ]

    We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.