Mageia 2019-0170: kernel security update

    Date12 May 2019
    CategoryMageia
    667
    Posted ByLinuxSecurity Advisories
    This kernel update is based on the upstream 4.14.116 and fixes atleast the following security issues: A flaw was found in the Linux kernel's vfio interface implementation that permits violation of the user's locked memory limit. If a device is bound
    MGASA-2019-0170 - Updated kernel packages fixes security vulnerabilities
    
    Publication date: 12 May 2019
    URL: https://advisories.mageia.org/MGASA-2019-0170.html
    Type: security
    Affected Mageia releases: 6
    CVE: CVE-2019-3882,
         CVE-2019-7308,
         CVE-2019-11486,
         CVE-2019-11599
    
    This kernel update is based on the upstream 4.14.116 and fixes atleast
    the following security issues:
    
    A flaw was found in the Linux kernel's vfio interface implementation that
    permits violation of the user's locked memory limit. If a device is bound
    to a vfio driver, such as vfio-pci, and the local attacker is
    administratively granted ownership of the device, it may cause a system
    memory exhaustion and thus a denial of service (DoS) (CVE-2019-3882).
    
    kernel/bpf/verifier.c in the Linux kernel before 4.20.6 performs undesirable
    out-of-bounds speculation on pointer arithmetic in various cases, including
    cases of different branches with different state or limits to sanitize,
    leading to side-channel attacks (CVE-2019-7308).
    
    The Siemens R3964 line discipline driver in drivers/tty/n_r3964.c in the
    Linux kernel before 5.0.8 has multiple race conditions (CVE-2019-11486).
    
    The coredump implementation in the Linux kernel before 5.0.10 does not use
    locking or other mechanisms to prevent vma layout or vma flags changes while
    it runs, which allows local users to obtain sensitive information, cause a
    denial of service, or possibly have unspecified other impact by triggering
    a race condition with mmget_not_zero or get_task_mm calls (CVE-2019-11599).
    
    WireGuard has been updated to 0.0.20190406.
    
    For other uptstream fixes in this update, see the referenced changelogs.
    
    References:
    - https://bugs.mageia.org/show_bug.cgi?id=24773
    - https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.107
    - https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.108
    - https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.109
    - https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.110
    - https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.111
    - https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.112
    - https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.113
    - https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.114
    - https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.115
    - https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.116
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3882
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-7308
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11486
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11599
    
    SRPMS:
    - 6/core/kernel-4.14.116-1.mga6
    - 6/core/kernel-userspace-headers-4.14.116-1.mga6
    - 6/core/kmod-vboxadditions-6.0.6-2.mga6
    - 6/core/kmod-virtualbox-6.0.6-2.mga6
    - 6/core/kmod-xtables-addons-2.13-84.mga6
    - 6/core/wireguard-tools-0.0.20190406-1.mga6
    

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