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    ArchLinux: 202004-3: linux-lts: privilege escalation

    Posted By
    The package linux-lts before version 5.4.28-2 is vulnerable to privilege escalation.
    Arch Linux Security Advisory ASA-202004-3
    Severity: High
    Date    : 2020-04-01
    CVE-ID  : CVE-2020-8835
    Package : linux-lts
    Type    : privilege escalation
    Remote  : No
    Link    :
    The package linux-lts before version 5.4.28-2 is vulnerable to
    privilege escalation.
    Upgrade to 5.4.28-2.
    # pacman -Syu "linux-lts>=5.4.28-2"
    The problem has been fixed upstream but no release is available yet.
    BPF access can be restricted to privileged users by setting
    kernel.unprivileged_bpf_disabled to 1:
    # sysctl -w kernel.unprivileged_bpf_disabled=1
    An out-of-bounds access flaw was found in the Linux kernel’s
    implementation of the eBPF code verifier, where an incorrect register
    bounds calculation while checking 32-bit instructions in an eBPF
    program occurs. This flaw allows an unprivileged user or process to
    execute eBPF programs to crash the kernel, resulting in a denial of
    service or potentially gaining root privileges on the system.
    An unprivileged local user or process can crash the kernel, resulting
    in a denial of service, or potentially gain root privileges on the
    ========== email address is being protected from spambots. You need JavaScript enabled to view it./T/

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