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    CVE-2016-7908

    The mcf_fec_do_tx function in hw/net/mcf_fec.c in QEMU (aka Quick Emulator) does not properly limit the buffer descriptor count when transmitting packets, which allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags.

    Published:Sep 21, 2016
    Last Modified:Apr 12, 2025
    EPS:Oct 5, 2016
    EPSS Score:0.00135
    CVSS Score:4.4

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Qemu
    Product
    Qemu

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=070c4b92b8cd5390889716677a0b92444d6e087a
    http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
    http://www.openwall.com/lists/oss-security/2016/10/03/2
    http://www.openwall.com/lists/oss-security/2016/10/03/5
    http://www.securityfocus.com/bid/93273
    https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
    https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05557.html
    https://security.gentoo.org/glsa/201611-11
    http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=070c4b92b8cd5390889716677a0b92444d6e087a
    http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
    http://www.openwall.com/lists/oss-security/2016/10/03/2
    http://www.openwall.com/lists/oss-security/2016/10/03/5
    http://www.securityfocus.com/bid/93273
    https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
    https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05557.html
    https://security.gentoo.org/glsa/201611-11

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High