Resource exhaustion in Linux kernel - CVE-2019-14284

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Main Vulnerability Database Vulnerabilities #VU19593

Resource exhaustion in Linux kernel - CVE-2019-14284

Published: August 1, 2019


Vulnerability identifier: #VU19593
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-14284
CWE-ID: CWE-400
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a divide-by-zero condition in the "drivers/block/floppy.c" file. A local authenticated attacker can insert a floppy disk that submits malicious input to the targeted system, trigger resource exhaustion and perform a denial of service (DoS) attack.


Affected software

Linux kernel
Slackware Linux
Opensuse
Ubuntu
linux (Ubuntu package)
linux-raspi2 (Ubuntu package)
linux-aws (Ubuntu package)
linux-kvm (Ubuntu package)
linux-snapdragon (Ubuntu package)
linux-hwe (Ubuntu package)
linux-gcp (Ubuntu package)
linux-azure (Ubuntu package)
linux-oracle (Ubuntu package)
linux-gke-4.15 (Ubuntu package)
linux-gke-5.0 (Ubuntu package)

How to mitigate CVE-2019-14284

Install updates from vendor's website.

Linux kernel - update to 5.2.3
linux (Ubuntu package) - addressed in versions 4.4.0-161.189, 4.15.0-60.67, 5.0.0-27.28
linux-raspi2 (Ubuntu package) - addressed in versions 4.4.0-1120.129, 4.15.0-1044.47, 5.0.0-1015.15
linux-aws (Ubuntu package) - addressed in versions 4.4.0-1092.103, 5.0.0-1014.16
linux-kvm (Ubuntu package) - addressed in versions 4.4.0-1056.63, 4.15.0-1043.43, 5.0.0-1015.16
linux-snapdragon (Ubuntu package) - addressed in versions 4.4.0-1124.130, 5.0.0-1019.20
linux-hwe (Ubuntu package) - addressed in versions 4.15.0-60.67~16.04.1, 5.0.0-27.28~18.04.1
linux-gcp (Ubuntu package) - addressed in versions 4.15.0-1041.43, 5.0.0-1015.15
linux-azure (Ubuntu package) - addressed in versions 4.15.0-1056.61, 5.0.0-1018.19~18.04.1, 5.0.0-1018.19
linux-oracle (Ubuntu package) - addressed in versions 4.15.0-1022.25~16.04.1, 4.15.0-1022.25
linux-gke-4.15 (Ubuntu package) - update to 4.15.0-1041.43
linux-gke-5.0 (Ubuntu package) - update to 5.0.0-1015.15~18.04.1

External References

Related Security Bulletins