CVE-2019-14284: Divide by Zero
First published: Fri Jul 26 2019(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <5.2.3 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.133-1 6.12.21-1 6.12.22-1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- 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
- https://launchpad.net/bugs/cve/CVE-2019-14284
- https://git.kernel.org/linus/f3554aeb991214cbfafd17d55e2bfddb50282e32
- https://security-tracker.debian.org/tracker/CVE-2019-14284
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14284
- https://nvd.nist.gov/vuln/detail/CVE-2019-14284
- https://ubuntu.com/security/CVE-2019-14284
Frequently Asked Questions
What is the severity of CVE-2019-14284?
CVE-2019-14284 has a severity rating that allows for denial of service vulnerabilities in the Linux kernel, which can cause system crashes.
How do I fix CVE-2019-14284?
To fix CVE-2019-14284, upgrade to a Linux kernel version 5.2.3 or later.
What are the affected versions for CVE-2019-14284?
CVE-2019-14284 affects versions of the Linux kernel prior to 5.2.3.
What type of vulnerability is CVE-2019-14284?
CVE-2019-14284 is a denial of service vulnerability caused by a division-by-zero error in the Linux kernel.
Which Linux distributions are affected by CVE-2019-14284?
CVE-2019-14284 affects various Linux distributions utilizing the vulnerable versions of the Linux kernel prior to 5.2.3.
- agent/type
- collector/launchpad-cve
- source/Launchpad
- agent/author
- agent/severity
- agent/weakness
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/remedy
- agent/first-publish-date
- collector/usn-cve
- source/Ubuntu
- agent/description
- agent/event
- agent/last-modified-date
- agent/trending
- agent/source
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/nvd-index
- agent/softwarecombine
- agent/tags
- collector/security-tracker-debian
- source/Debian
- vendor/linux
- canonical/linux kernel
- package-manager/debian