CVE-2019-14284

MEDIUM

Linux kernel <5.2.3 - DoS

Title source: llm
STIX 2.1

Description

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.

References (21)

Core 21
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.3
Mailing List mailing-list x_refsource_bugtraq
https://seclists.org/bugtraq/2019/Aug/13
Mailing List mailing-list x_refsource_bugtraq
https://seclists.org/bugtraq/2019/Aug/18
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html
Mailing List mailing-list x_refsource_bugtraq
https://seclists.org/bugtraq/2019/Aug/26
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4117-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4114-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4115-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4116-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4118-1/
Vendor Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20190905-0002/
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2019/dsa-4495
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2019/dsa-4497

Scores

CVSS v3 6.2
EPSS 0.0005
EPSS Percentile 14.5%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-369
Status published
Products (1)
linux/linux_kernel < 5.2.3
Published Jul 26, 2019
Tracked Since Feb 18, 2026