RedHat: RHSA-2019-1479:01 Important: kernel security and bug fix update

    Date17 Jun 2019
    CategoryRed Hat
    499
    Posted ByLinuxSecurity Advisories
    An update for kernel 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 security and bug fix update
    Advisory ID:       RHSA-2019:1479-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://access.redhat.com/errata/RHSA-2019:1479
    Issue date:        2019-06-17
    CVE Names:         CVE-2019-9213 CVE-2019-11477 CVE-2019-11478 
                       CVE-2019-11479 
    =====================================================================
    
    1. Summary:
    
    An update for kernel 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 CodeReady Linux Builder (v. 8) - aarch64, ppc64le, x86_64
    Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64
    
    3. Description:
    
    The kernel packages contain the Linux kernel, the core of any Linux
    operating system.
    
    Security Fix(es):
    
    * An integer overflow flaw was found in the way the Linux kernel's
    networking subsystem processed TCP Selective Acknowledgment (SACK)
    segments. While processing SACK segments, the Linux kernel's socket buffer
    (SKB) data structure becomes fragmented. Each fragment is about TCP maximum
    segment size (MSS) bytes. To efficiently process SACK blocks, the Linux
    kernel merges multiple fragmented SKBs into one, potentially overflowing
    the variable holding the number of segments. A remote attacker could use
    this flaw to crash the Linux kernel by sending a crafted sequence of SACK
    segments on a TCP connection with small value of TCP MSS, resulting in a
    denial of service (DoS). (CVE-2019-11477)
    
    * kernel: lack of check for mmap minimum address in expand_downwards in
    mm/mmap.c leads to NULL pointer dereferences exploit on non-SMAP platforms
    (CVE-2019-9213)
    
    * Kernel: tcp: excessive resource consumption while processing SACK blocks
    allows remote denial of service (CVE-2019-11478)
    
    * Kernel: tcp: excessive resource consumption for TCP connections with low
    MSS allows remote denial of service (CVE-2019-11479)
    
    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):
    
    * [HPE 8.0 Bug] nvme drive power button does not turn off drive
    (BZ#1700288)
    
    * RHEL8.0 - hw csum failure seen in dmesg and console (using
    mlx5/mlx4/Mellanox) (BZ#1700289)
    
    * RHEL8.0 - vfio-ap: add subsystem to matrix device to avoid libudev
    failures (kvm) (BZ#1700290)
    
    * [FJ8.1 Bug]: Make Fujitsu Erratum 010001 patch work on A64FX v1r0
    (BZ#1700901)
    
    * [FJ8.0 Bug]: Fujitsu A64FX processor errata - panic by unknown fault
    (BZ#1700902)
    
    * RHEL 8.0 Snapshot 4 - nvme create-ns command hangs after creating 20
    namespaces on Bolt (NVMe) (BZ#1701140)
    
    * [Cavium/Marvell 8.0 qed] Fix qed_mcp_halt() and qed_mcp_resume()
    (backporting bug) (BZ#1704184)
    
    * [Intel 8.1 Bug] PBF: Base frequency display fix (BZ#1706739)
    
    * [RHEL8]read/write operation not permitted to /sys/kernel/debug/gcov/reset
    (BZ#1708100)
    
    * RHEL8.0 - ISST-LTE:pVM:fleetwood:LPM:raylp85:After lpm seeing the 
    console logs on the the lpar at  target side (BZ#1708102)
    
    * RHEL8.0 - Backport support for software count cache flush Spectre v2
    mitigation (BZ#1708112)
    
    * [Regression] RHEL8.0 - System crashed with one stress-ng-mremap stressor
    on Boston (kvm host) (BZ#1708617)
    
    * [intel ice Rhel 8 RC1] ethtool -A ethx causes interfaces to go down
    (BZ#1709433)
    
    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/):
    
    1686136 - CVE-2019-9213 kernel: lack of check for mmap minimum address in expand_downwards in mm/mmap.c leads to NULL pointer dereferences exploit on non-SMAP platforms
    1719123 - CVE-2019-11477 Kernel: tcp: integer overflow while processing SACK blocks allows remote denial of service
    1719128 - CVE-2019-11478 Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service
    1719129 - CVE-2019-11479 Kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service
    
    6. Package List:
    
    Red Hat Enterprise Linux BaseOS (v. 8):
    
    Source:
    kernel-4.18.0-80.4.2.el8_0.src.rpm
    
    aarch64:
    bpftool-4.18.0-80.4.2.el8_0.aarch64.rpm
    bpftool-debuginfo-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-core-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-cross-headers-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-debug-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-debug-core-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-debug-debuginfo-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-debug-devel-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-debug-modules-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-debug-modules-extra-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-debuginfo-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-debuginfo-common-aarch64-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-devel-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-headers-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-modules-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-modules-extra-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-tools-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-tools-debuginfo-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-tools-libs-4.18.0-80.4.2.el8_0.aarch64.rpm
    perf-4.18.0-80.4.2.el8_0.aarch64.rpm
    perf-debuginfo-4.18.0-80.4.2.el8_0.aarch64.rpm
    python3-perf-4.18.0-80.4.2.el8_0.aarch64.rpm
    python3-perf-debuginfo-4.18.0-80.4.2.el8_0.aarch64.rpm
    
    noarch:
    kernel-abi-whitelists-4.18.0-80.4.2.el8_0.noarch.rpm
    kernel-doc-4.18.0-80.4.2.el8_0.noarch.rpm
    
    ppc64le:
    bpftool-4.18.0-80.4.2.el8_0.ppc64le.rpm
    bpftool-debuginfo-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-core-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-cross-headers-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-debug-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-debug-core-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-debug-debuginfo-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-debug-devel-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-debug-modules-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-debug-modules-extra-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-debuginfo-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-debuginfo-common-ppc64le-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-devel-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-headers-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-modules-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-modules-extra-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-tools-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-tools-debuginfo-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-tools-libs-4.18.0-80.4.2.el8_0.ppc64le.rpm
    perf-4.18.0-80.4.2.el8_0.ppc64le.rpm
    perf-debuginfo-4.18.0-80.4.2.el8_0.ppc64le.rpm
    python3-perf-4.18.0-80.4.2.el8_0.ppc64le.rpm
    python3-perf-debuginfo-4.18.0-80.4.2.el8_0.ppc64le.rpm
    
    s390x:
    bpftool-4.18.0-80.4.2.el8_0.s390x.rpm
    bpftool-debuginfo-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-core-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-cross-headers-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-debug-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-debug-core-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-debug-debuginfo-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-debug-devel-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-debug-modules-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-debug-modules-extra-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-debuginfo-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-debuginfo-common-s390x-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-devel-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-headers-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-modules-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-modules-extra-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-tools-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-tools-debuginfo-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-zfcpdump-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-zfcpdump-core-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-zfcpdump-debuginfo-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-zfcpdump-devel-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-zfcpdump-modules-4.18.0-80.4.2.el8_0.s390x.rpm
    kernel-zfcpdump-modules-extra-4.18.0-80.4.2.el8_0.s390x.rpm
    perf-4.18.0-80.4.2.el8_0.s390x.rpm
    perf-debuginfo-4.18.0-80.4.2.el8_0.s390x.rpm
    python3-perf-4.18.0-80.4.2.el8_0.s390x.rpm
    python3-perf-debuginfo-4.18.0-80.4.2.el8_0.s390x.rpm
    
    x86_64:
    bpftool-4.18.0-80.4.2.el8_0.x86_64.rpm
    bpftool-debuginfo-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-core-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-cross-headers-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-debug-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-debug-core-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-debug-debuginfo-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-debug-devel-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-debug-modules-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-debug-modules-extra-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-debuginfo-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-debuginfo-common-x86_64-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-devel-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-headers-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-modules-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-modules-extra-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-tools-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-tools-debuginfo-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-tools-libs-4.18.0-80.4.2.el8_0.x86_64.rpm
    perf-4.18.0-80.4.2.el8_0.x86_64.rpm
    perf-debuginfo-4.18.0-80.4.2.el8_0.x86_64.rpm
    python3-perf-4.18.0-80.4.2.el8_0.x86_64.rpm
    python3-perf-debuginfo-4.18.0-80.4.2.el8_0.x86_64.rpm
    
    Red Hat CodeReady Linux Builder (v. 8):
    
    aarch64:
    bpftool-debuginfo-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-debug-debuginfo-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-debuginfo-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-debuginfo-common-aarch64-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-tools-debuginfo-4.18.0-80.4.2.el8_0.aarch64.rpm
    kernel-tools-libs-devel-4.18.0-80.4.2.el8_0.aarch64.rpm
    perf-debuginfo-4.18.0-80.4.2.el8_0.aarch64.rpm
    python3-perf-debuginfo-4.18.0-80.4.2.el8_0.aarch64.rpm
    
    ppc64le:
    bpftool-debuginfo-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-debug-debuginfo-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-debuginfo-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-debuginfo-common-ppc64le-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-tools-debuginfo-4.18.0-80.4.2.el8_0.ppc64le.rpm
    kernel-tools-libs-devel-4.18.0-80.4.2.el8_0.ppc64le.rpm
    perf-debuginfo-4.18.0-80.4.2.el8_0.ppc64le.rpm
    python3-perf-debuginfo-4.18.0-80.4.2.el8_0.ppc64le.rpm
    
    x86_64:
    bpftool-debuginfo-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-debug-debuginfo-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-debuginfo-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-debuginfo-common-x86_64-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-tools-debuginfo-4.18.0-80.4.2.el8_0.x86_64.rpm
    kernel-tools-libs-devel-4.18.0-80.4.2.el8_0.x86_64.rpm
    perf-debuginfo-4.18.0-80.4.2.el8_0.x86_64.rpm
    python3-perf-debuginfo-4.18.0-80.4.2.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-2019-9213
    https://access.redhat.com/security/cve/CVE-2019-11477
    https://access.redhat.com/security/cve/CVE-2019-11478
    https://access.redhat.com/security/cve/CVE-2019-11479
    https://access.redhat.com/security/updates/classification/#important
    https://access.redhat.com/security/vulnerabilities/tcpsack
    
    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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