Mageia 2020-0156: kernel security update

    Date 02 Apr 2020
    575
    Posted By LinuxSecurity Advisories
    This update is based on upstream 5.5.14 and fixes atleast the following security vulnerabilities: In the Linux kernel 5.3.10, there is a use-after-free (read) in the perf_trace_lock_acquire function (related to include/trace/events/lock.h)
    MGASA-2020-0156 - Updated kernel packages fix security vulnerabilities
    
    Publication date: 02 Apr 2020
    URL: https://advisories.mageia.org/MGASA-2020-0156.html
    Type: security
    Affected Mageia releases: 7
    CVE: CVE-2019-19769,
         CVE-2020-8835
    
    This update is based on upstream 5.5.14 and fixes atleast the following
    security vulnerabilities:
    
    In the Linux kernel 5.3.10, there is a use-after-free (read) in the
    perf_trace_lock_acquire function (related to include/trace/events/lock.h)
    (CVE-2019-19769).
    
    Manfred Paul discovered that the bpf verifier in the Linux kernel did not
    properly calculate register bounds for certain operations. A local attacker
    could use this to expose sensitive information (kernel memory) or gain
    administrative privileges (CVE-2020-8835).
    
    Security fixes and hardenings to the mac00211 layer to prevent leaking keys
    and frames.
    
    Other notable changes in this update:
    - WireGuard kernel module has been updated to v1.0.20200330 and the tools
      to v1.0.20200319.
    - exfat-utils has been rebuilt in core (was previously in tainted) as we
      now also ship the official upstream exfat driver.
    
    For other upstream fixes in this update, see the referenced changelogs.
    
    References:
    - https://bugs.mageia.org/show_bug.cgi?id=26420
    - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5.10
    - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5.11
    - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5.12
    - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5.13
    - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5.14
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19769
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8835
    
    SRPMS:
    - 7/core/kernel-5.5.14-1.mga7
    - 7/core/kmod-virtualbox-6.0.18-8.mga7
    - 7/core/kmod-xtables-addons-3.8-8.mga7
    - 7/core/wireguard-tools-1.0.20200319-1.mga7
    - 7/core/exfat-utils-1.3.0-2.mga7
    

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