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    RedHat: RHSA-2021-0004:01 Important: kernel-rt security and bug fix update

    Date 03 Jan 2021
    415
    Posted By LinuxSecurity Advisories
    An update for kernel-rt is now available for Red Hat Enterprise Linux 8. 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
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    =====================================================================
                       Red Hat Security Advisory
    
    Synopsis:          Important: kernel-rt security and bug fix update
    Advisory ID:       RHSA-2021:0004-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://access.redhat.com/errata/RHSA-2021:0004
    Issue date:        2021-01-04
    CVE Names:         CVE-2020-25211 
    =====================================================================
    
    1. Summary:
    
    An update for kernel-rt is now available for Red Hat Enterprise Linux 8.
    
    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 Real Time (v. 8) - x86_64
    Red Hat Enterprise Linux Real Time for NFV (v. 8) - 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: Local buffer overflow in ctnetlink_parse_tuple_filter in
    net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211)
    
    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):
    
    * kernel-rt: update RT source tree to the RHEL-8.3.z source tree
    (BZ#1906140)
    
    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/):
    
    1877571 - CVE-2020-25211 kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c
    1906140 - kernel-rt: update RT source tree to the RHEL-8.3.z source tree
    
    6. Package List:
    
    Red Hat Enterprise Linux Real Time for NFV (v. 8):
    
    Source:
    kernel-rt-4.18.0-240.10.1.rt7.64.el8_3.src.rpm
    
    x86_64:
    kernel-rt-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-core-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debug-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debug-core-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debug-debuginfo-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debug-devel-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debug-kvm-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debug-modules-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debug-modules-extra-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debuginfo-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debuginfo-common-x86_64-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-devel-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-kvm-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-modules-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-modules-extra-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    
    Red Hat Enterprise Linux Real Time (v. 8):
    
    Source:
    kernel-rt-4.18.0-240.10.1.rt7.64.el8_3.src.rpm
    
    x86_64:
    kernel-rt-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-core-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debug-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debug-core-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debug-debuginfo-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debug-devel-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debug-modules-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debug-modules-extra-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debuginfo-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-debuginfo-common-x86_64-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-devel-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-modules-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
    kernel-rt-modules-extra-4.18.0-240.10.1.rt7.64.el8_3.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-2020-25211
    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 2021 Red Hat, Inc.
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