RedHat: RHSA-2020-0698:01 Important: kpatch-patch security update

    Date03 Mar 2020
    314
    Posted ByLinuxSecurity Advisories
    An update for kpatch-patch is now available for Red Hat Enterprise Linux 7.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score,
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    =====================================================================
                       Red Hat Security Advisory
    
    Synopsis:          Important: kpatch-patch security update
    Advisory ID:       RHSA-2020:0698-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://access.redhat.com/errata/RHSA-2020:0698
    Issue date:        2020-03-03
    CVE Names:         CVE-2018-20856 
    =====================================================================
    
    1. Summary:
    
    An update for kpatch-patch is now available for Red Hat Enterprise Linux
    7.6 Extended Update Support.
    
    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 Enterprise Linux Server EUS (v. 7.6) - ppc64le, x86_64
    
    3. Description:
    
    This is a kernel live patch module which is automatically loaded by the RPM
    post-install script to modify the code of a running kernel.
    
    Security Fix(es):
    
    * kernel: Use-after-free in __blk_drain_queue() function in
    block/blk-core.c (CVE-2018-20856)
    
    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.
    
    4. Solution:
    
    Before applying this update, make sure all previously released errata
    relevant to your system have been applied.
    
    For details on how to apply this update, which includes the changes
    described in this advisory, refer to:
    
    https://access.redhat.com/articles/11258
    
    5. Bugs fixed (https://bugzilla.redhat.com/):
    
    1738705 - CVE-2018-20856 kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c
    
    6. Package List:
    
    Red Hat Enterprise Linux Server EUS (v. 7.6):
    
    Source:
    kpatch-patch-3_10_0-957_35_1-1-6.el7.src.rpm
    kpatch-patch-3_10_0-957_35_2-1-5.el7.src.rpm
    kpatch-patch-3_10_0-957_38_1-1-4.el7.src.rpm
    kpatch-patch-3_10_0-957_38_2-1-3.el7.src.rpm
    kpatch-patch-3_10_0-957_38_3-1-3.el7.src.rpm
    kpatch-patch-3_10_0-957_41_1-1-1.el7.src.rpm
    kpatch-patch-3_10_0-957_43_1-1-1.el7.src.rpm
    
    ppc64le:
    kpatch-patch-3_10_0-957_35_1-1-6.el7.ppc64le.rpm
    kpatch-patch-3_10_0-957_35_1-debuginfo-1-6.el7.ppc64le.rpm
    kpatch-patch-3_10_0-957_35_2-1-5.el7.ppc64le.rpm
    kpatch-patch-3_10_0-957_35_2-debuginfo-1-5.el7.ppc64le.rpm
    kpatch-patch-3_10_0-957_38_1-1-4.el7.ppc64le.rpm
    kpatch-patch-3_10_0-957_38_1-debuginfo-1-4.el7.ppc64le.rpm
    kpatch-patch-3_10_0-957_38_2-1-3.el7.ppc64le.rpm
    kpatch-patch-3_10_0-957_38_3-1-3.el7.ppc64le.rpm
    kpatch-patch-3_10_0-957_41_1-1-1.el7.ppc64le.rpm
    kpatch-patch-3_10_0-957_43_1-1-1.el7.ppc64le.rpm
    
    x86_64:
    kpatch-patch-3_10_0-957_35_1-1-6.el7.x86_64.rpm
    kpatch-patch-3_10_0-957_35_1-debuginfo-1-6.el7.x86_64.rpm
    kpatch-patch-3_10_0-957_35_2-1-5.el7.x86_64.rpm
    kpatch-patch-3_10_0-957_35_2-debuginfo-1-5.el7.x86_64.rpm
    kpatch-patch-3_10_0-957_38_1-1-4.el7.x86_64.rpm
    kpatch-patch-3_10_0-957_38_1-debuginfo-1-4.el7.x86_64.rpm
    kpatch-patch-3_10_0-957_38_2-1-3.el7.x86_64.rpm
    kpatch-patch-3_10_0-957_38_3-1-3.el7.x86_64.rpm
    kpatch-patch-3_10_0-957_41_1-1-1.el7.x86_64.rpm
    kpatch-patch-3_10_0-957_43_1-1-1.el7.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-2018-20856
    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.
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