RedHat: RHSA-2019-2945:01 Important: kpatch-patch security update

    Date 01 Oct 2019
    1039
    Posted By LinuxSecurity Advisories
    An update for kpatch-patch is now available for Red Hat Enterprise Linux 7. 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: kpatch-patch security update
    Advisory ID:       RHSA-2019:2945-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://access.redhat.com/errata/RHSA-2019:2945
    Issue date:        2019-10-01
    CVE Names:         CVE-2019-9500 
    =====================================================================
    
    1. Summary:
    
    An update for kpatch-patch is now available for Red Hat Enterprise Linux 7.
    
    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 (v. 7) - 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):
    
    * If the Wake-up on Wireless LAN functionality is configured in the
    brcmfmac driver, which only works with Broadcom FullMAC chipsets, a
    malicious event frame can be constructed to trigger a heap buffer overflow
    in the brcmf_wowl_nd_results() function. This vulnerability can be
    exploited by compromised chipsets to compromise the host, or when used in
    combination with another brcmfmac driver flaw (CVE-2019-9503), can be used
    remotely. This can result in a remote denial of service (DoS). Due to the
    nature of the flaw, a remote privilege escalation cannot be fully ruled
    out. (CVE-2019-9500)
    
    For more details about the security issue(s), including the impact, a CVSS
    score, acknowledgements, 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, refer to:
    
    https://access.redhat.com/articles/11258
    
    5. Bugs fixed (https://bugzilla.redhat.com/):
    
    1701224 - CVE-2019-9500 kernel: brcmfmac heap buffer overflow in brcmf_wowl_nd_results
    
    6. Package List:
    
    Red Hat Enterprise Linux Server (v. 7):
    
    Source:
    kpatch-patch-3_10_0-1062-1-2.el7.src.rpm
    
    ppc64le:
    kpatch-patch-3_10_0-1062-1-2.el7.ppc64le.rpm
    kpatch-patch-3_10_0-1062-debuginfo-1-2.el7.ppc64le.rpm
    
    x86_64:
    kpatch-patch-3_10_0-1062-1-2.el7.x86_64.rpm
    kpatch-patch-3_10_0-1062-debuginfo-1-2.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-2019-9500
    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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