CVE-2019-14284

26.07.2019, 13:15

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	6.2 MEDIUM	LOCAL	LOW	NONE	CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
mitre	CNA	---				---
CVE	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 13%

Vendor	Product	Version
linux	linux_kernel	𝑥 < 5.2.3

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

linux

bullseye	5.10.223-1 fixed
bullseye (security)	5.10.226-1 fixed
bookworm	6.1.106-3 fixed
bookworm (security)	6.1.112-1 fixed
trixie	6.11.5-1 fixed
sid	6.11.6-1 fixed

Ubuntu Releases

Ubuntu Product

Codename

linux

eoan	not-affected
disco	Fixed 5.0.0-27.28 released
bionic	Fixed 4.15.0-60.67 released
xenial	Fixed 4.4.0-161.189 released
trusty	ignored

linux-aws

eoan	not-affected
disco	Fixed 5.0.0-1014.16 released
bionic	Fixed 4.15.0-1047.49 released
xenial	Fixed 4.4.0-1092.103 released
trusty	ignored

linux-aws-5.0

eoan	dne
disco	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-aws-hwe

eoan	dne
disco	dne
bionic	dne
xenial	Fixed 4.15.0-1047.49~16.04.1 released
trusty	dne

linux-azure

eoan	not-affected
disco	Fixed 5.0.0-1018.19 released
bionic	Fixed 5.0.0-1018.19~18.04.1 released
xenial	Fixed 4.15.0-1056.61 released
trusty	ignored

linux-azure-5.3

eoan	dne
disco	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-azure-edge

eoan	dne
disco	dne
bionic	Fixed 5.0.0-1018.19~18.04.1 released
xenial	Fixed 4.15.0-1056.61 released
trusty	dne

linux-euclid

eoan	dne
disco	dne
bionic	dne
xenial	ignored
trusty	dne

linux-flo

eoan	dne
disco	dne
bionic	dne
xenial	ignored
trusty	dne

linux-gcp

eoan	not-affected
disco	Fixed 5.0.0-1015.15 released
bionic	Fixed 4.15.0-1042.45 released
xenial	Fixed 4.15.0-1041.43 released
trusty	dne

linux-gcp-5.3

eoan	dne
disco	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-gcp-edge

eoan	dne
disco	dne
bionic	Fixed 4.15.0-1042.45 released
xenial	dne
trusty	dne

linux-gke

eoan	dne
disco	dne
bionic	dne
xenial	ignored
trusty	dne

linux-gke-4.15

eoan	dne
disco	dne
bionic	Fixed 4.15.0-1041.43 released
xenial	dne
trusty	dne

linux-gke-5.0

eoan	dne
disco	dne
bionic	Fixed 5.0.0-1015.15~18.04.1 released
xenial	dne
trusty	dne

linux-goldfish

eoan	dne
disco	dne
bionic	dne
xenial	ignored
trusty	dne

linux-grouper

eoan	dne
disco	dne
bionic	dne
xenial	dne
trusty	dne

linux-hwe

eoan	dne
disco	dne
bionic	Fixed 5.0.0-27.28~18.04.1 released
xenial	Fixed 4.15.0-60.67~16.04.1 released
trusty	dne

linux-hwe-edge

eoan	dne
disco	dne
bionic	ignored
xenial	Fixed 4.15.0-60.67~16.04.1 released
trusty	dne

linux-kvm

eoan	not-affected
disco	Fixed 5.0.0-1015.16 released
bionic	Fixed 4.15.0-1043.43 released
xenial	Fixed 4.4.0-1056.63 released
trusty	dne

linux-lts-trusty

eoan	dne
disco	dne
bionic	dne
xenial	dne
trusty	dne

linux-lts-utopic

eoan	dne
disco	dne
bionic	dne
xenial	dne
trusty	dne

linux-lts-vivid

eoan	dne
disco	dne
bionic	dne
xenial	dne
trusty	dne

linux-lts-wily

eoan	dne
disco	dne
bionic	dne
xenial	dne
trusty	dne

linux-lts-xenial

eoan	dne
disco	dne
bionic	dne
xenial	dne
trusty	ignored

linux-maguro

eoan	dne
disco	dne
bionic	dne
xenial	dne
trusty	dne

linux-mako

eoan	dne
disco	dne
bionic	dne
xenial	ignored
trusty	dne

linux-manta

eoan	dne
disco	dne
bionic	dne
xenial	dne
trusty	dne

linux-oem

eoan	Fixed 4.15.0-1059.68 released
disco	ignored
bionic	Fixed 4.15.0-1056.65 released
xenial	ignored
trusty	dne

linux-oem-5.4

eoan	dne
bionic	dne
xenial	dne
trusty	dne

linux-oem-osp1

eoan	Fixed 5.0.0-1022.24 released
disco	ignored
bionic	Fixed 5.0.0-1020.22 released
xenial	dne
trusty	dne

linux-oracle

eoan	not-affected
disco	Fixed 5.0.0-1004.8 released
bionic	Fixed 4.15.0-1022.25 released
xenial	Fixed 4.15.0-1022.25~16.04.1 released
trusty	dne

linux-oracle-5.0

eoan	dne
disco	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-raspi2

eoan	not-affected
disco	Fixed 5.0.0-1015.15 released
bionic	Fixed 4.15.0-1044.47 released
xenial	Fixed 4.4.0-1120.129 released
trusty	dne

linux-raspi2-5.3

eoan	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-snapdragon

eoan	dne
disco	Fixed 5.0.0-1019.20 released
bionic	Fixed 4.15.0-1062.69 released
xenial	Fixed 4.4.0-1124.130 released
trusty	dne

Common Weakness Enumeration

CWE-369 - Divide By Zero
The product divides a value by zero.

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