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    CVE-2019-14284

    In the Linux kernel before 5.2.3, drivers/block/floppy.c allows a denial of service by setup_format_params division-by-zero. Two consecutive ioctls can trigger the bug: the first one should set the drive geometry with .sect and .rate values that make F_SECT_PER_TRACK be zero. Next, the floppy format operation should be called. It can be triggered by an unprivileged local user even when a floppy disk has not been inserted. NOTE: QEMU creates the floppy device by default.

    Published:Jul 26, 2019
    Last Modified:Nov 21, 2024
    EPS:Jul 26, 2019
    EPSS Score:0.00048
    CVSS Score:6.2

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel

    Exploits

    No exploit reference

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    References

    http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00055.html
    http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00056.html
    http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
    http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-LSN-0055-1.html
    http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html
    https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.3
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f3554aeb991214cbfafd17d55e2bfddb50282e32
    https://github.com/torvalds/linux/commit/f3554aeb991214cbfafd17d55e2bfddb50282e32
    https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html
    https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html
    https://seclists.org/bugtraq/2019/Aug/13
    https://seclists.org/bugtraq/2019/Aug/18
    https://seclists.org/bugtraq/2019/Aug/26
    https://security.netapp.com/advisory/ntap-20190905-0002/
    https://usn.ubuntu.com/4114-1/
    https://usn.ubuntu.com/4115-1/
    https://usn.ubuntu.com/4116-1/
    https://usn.ubuntu.com/4117-1/
    https://usn.ubuntu.com/4118-1/
    https://www.debian.org/security/2019/dsa-4495
    https://www.debian.org/security/2019/dsa-4497
    http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00055.html
    http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00056.html
    http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
    http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-LSN-0055-1.html
    http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html
    https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.3
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f3554aeb991214cbfafd17d55e2bfddb50282e32
    https://github.com/torvalds/linux/commit/f3554aeb991214cbfafd17d55e2bfddb50282e32
    https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html
    https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html
    https://seclists.org/bugtraq/2019/Aug/13
    https://seclists.org/bugtraq/2019/Aug/18
    https://seclists.org/bugtraq/2019/Aug/26
    https://security.netapp.com/advisory/ntap-20190905-0002/
    https://usn.ubuntu.com/4114-1/
    https://usn.ubuntu.com/4115-1/
    https://usn.ubuntu.com/4116-1/
    https://usn.ubuntu.com/4117-1/
    https://usn.ubuntu.com/4118-1/
    https://www.debian.org/security/2019/dsa-4495
    https://www.debian.org/security/2019/dsa-4497

    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