CVE-2019-14284

MEDIUM

Linux kernel <5.2.3 - DoS

Title source: llm

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)

[Mailing List] http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00055.html

[Mailing List] http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00056.html

[Release Notes, Vendor Advisory] https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.3

[Patch, Vendor Advisory] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f3554aeb991214cbfafd17d55e2bfddb50282e32

[Patch, Third Party Advisory] https://github.com/torvalds/linux/commit/f3554aeb991214cbfafd17d55e2bfddb50282e32

View Patch ZIP pw:eip

[Mailing List] https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html

[Mailing List] https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html

[Mailing List] https://seclists.org/bugtraq/2019/Aug/13

[Vendor Advisory] https://usn.ubuntu.com/4114-1/

[Vendor Advisory] https://usn.ubuntu.com/4115-1/

[Vendor Advisory] https://usn.ubuntu.com/4116-1/

[Vendor Advisory] https://usn.ubuntu.com/4117-1/

[Vendor Advisory] https://usn.ubuntu.com/4118-1/

[Vendor Advisory] https://security.netapp.com/advisory/ntap-20190905-0002/

[Third Party Advisory] https://www.debian.org/security/2019/dsa-4495

[Third Party Advisory] https://www.debian.org/security/2019/dsa-4497

[Mailing List] https://seclists.org/bugtraq/2019/Aug/18

[Mailing List] https://seclists.org/bugtraq/2019/Aug/26

[Exploit, Third Party Advisory] http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html

[Exploit, Third Party Advisory] http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-LSN-0055-1.html

... and 1 more

Scores

CVSS v3 6.2

EPSS 0.0005

EPSS Percentile 14.7%

Attack Vector LOCAL

CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-369

Status published

Affected Products (1)

linux/linux_kernel < 5.2.3

Timeline

Published Jul 26, 2019

Tracked Since Feb 18, 2026