RedHat: RHSA-2019-1971:01 Important: kernel-rt security and bug fix update

    Date 30 Jul 2019
    3102
    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-2019:1971-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://access.redhat.com/errata/RHSA-2019:1971
    Issue date:        2019-07-30
    CVE Names:         CVE-2018-20784 CVE-2019-11085 CVE-2019-11810 
                       CVE-2019-11811 
    =====================================================================
    
    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: insufficient input validation in kernel mode driver in Intel i915
    graphics leads to privilege escalation (CVE-2019-11085)
    
    * kernel: DMA attack using peripheral devices  (Thunderclap) (BZ#1690716)
    
    * kernel: infinite loop in update_blocked_averages() in kernel/sched/fair.c
    leading to denial of service (CVE-2018-20784)
    
    * kernel: a NULL pointer dereference in
    drivers/scsi/megaraid/megaraid_sas_base.c leading to DoS (CVE-2019-11810)
    
    * kernel: use-after-free in drivers/char/ipmi/ipmi_si_intf.c,
    ipmi_si_mem_io.c, ipmi_si_port_io.c (CVE-2019-11811)
    
    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 to the RHEL8.0.z batch#2 source tree (BZ#1717516)
    
    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/):
    
    1680540 - CVE-2018-20784 kernel: infinite loop in update_blocked_averages() in kernel/sched/fair.c leading to denial of service
    1690716 - kernel: DMA attack using peripheral devices  (Thunderclap)
    1709164 - CVE-2019-11810 kernel: a NULL pointer dereference in drivers/scsi/megaraid/megaraid_sas_base.c leading to DoS
    1709180 - CVE-2019-11811 kernel: use-after-free in drivers/char/ipmi/ipmi_si_intf.c, ipmi_si_mem_io.c, ipmi_si_port_io.c
    1710405 - CVE-2019-11085 kernel: insufficient input validation in kernel mode driver in Intel i915 graphics leads to privilege escalation
    1717516 - kernel-rt: update to the RHEL8.0.z batch#2 source tree
    
    6. Package List:
    
    Red Hat Enterprise Linux Real Time for NFV (v. 8):
    
    Source:
    kernel-rt-4.18.0-80.7.1.rt9.153.el8_0.src.rpm
    
    x86_64:
    kernel-rt-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-core-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debug-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debug-core-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debug-debuginfo-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debug-devel-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debug-kvm-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debug-kvm-debuginfo-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debug-modules-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debug-modules-extra-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debuginfo-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debuginfo-common-x86_64-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-devel-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-kvm-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-kvm-debuginfo-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-modules-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-modules-extra-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    
    Red Hat Enterprise Linux Real Time (v. 8):
    
    Source:
    kernel-rt-4.18.0-80.7.1.rt9.153.el8_0.src.rpm
    
    x86_64:
    kernel-rt-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-core-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debug-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debug-core-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debug-debuginfo-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debug-devel-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debug-kvm-debuginfo-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debug-modules-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debug-modules-extra-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debuginfo-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-debuginfo-common-x86_64-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-devel-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-kvm-debuginfo-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-modules-4.18.0-80.7.1.rt9.153.el8_0.x86_64.rpm
    kernel-rt-modules-extra-4.18.0-80.7.1.rt9.153.el8_0.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-2018-20784
    https://access.redhat.com/security/cve/CVE-2019-11085
    https://access.redhat.com/security/cve/CVE-2019-11810
    https://access.redhat.com/security/cve/CVE-2019-11811
    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 2019 Red Hat, Inc.
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    LinuxSecurity Poll

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    [{"id":"112","title":"I strongly support this change - racially charged language should not be used in the code and documentation of the kernel and other open-source projects.","votes":"3","type":"x","order":"1","pct":42.86,"resources":[]},{"id":"113","title":"I'm indifferent - this small change will not affect broader issues of racial insensitivity and white privilege.","votes":"2","type":"x","order":"2","pct":28.57,"resources":[]},{"id":"114","title":"I'm opposed to this change - there is no need to change language that has been used for years. It doesn't make sense for people to take offense to terminology used in community projects.","votes":"2","type":"x","order":"3","pct":28.57,"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
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