ArchLinux: 201905-2: linux: arbitrary code execution

    Date07 May 2019
    CategoryArchLinux
    232
    Posted ByLinuxSecurity Advisories
    The package linux before version 5.0.12.arch2-1 is vulnerable to arbitrary code execution.
    Arch Linux Security Advisory ASA-201905-2
    =========================================
    
    Severity: High
    Date    : 2019-05-06
    CVE-ID  : CVE-2019-11683
    Package : linux
    Type    : arbitrary code execution
    Remote  : Yes
    Link    : https://security.archlinux.org/AVG-955
    
    Summary
    =======
    
    The package linux before version 5.0.12.arch2-1 is vulnerable to
    arbitrary code execution.
    
    Resolution
    ==========
    
    Upgrade to 5.0.12.arch2-1.
    
    # pacman -Syu "linux>=5.0.12.arch2-1"
    
    The problem has been fixed upstream in version 5.0.12.arch2.
    
    Workaround
    ==========
    
    None.
    
    Description
    ===========
    
    udp_gro_receive_segment in net/ipv4/udp_offload.c in the Linux kernel
    5.x through 5.0.11 allows remote attackers to cause a denial of service
    (slab-out-of-bounds memory corruption) or possibly have unspecified
    other impact via UDP packets with a 0 payload, because of mishandling
    of padded packets, aka the "GRO packet of death" issue.
    
    Impact
    ======
    
    A remote attacker is able to cause a denial of service possibly leading
    to remote code execution by sending UDP packets with a special payload.
    
    References
    ==========
    
    https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=4dd2b82d5adfbe0b1587ccad7a8f76d826120f37
    http://www.securityfocus.com/bid/108142
    http://www.openwall.com/lists/oss-security/2019/05/05/4
    http://www.openwall.com/lists/oss-security/2019/05/02/1
    https://security.archlinux.org/CVE-2019-11683
    
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