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Fencer Intel
medium 6.2

CVE-2019-14284 json

In the Linux kernel before 5.2.3, drivers/block/floppy.c allows a denial of service by setup_format_params division-by-zero.

published 7y ago modified 4mo ago also EUVD-2019-5512

cvss
6.2
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

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.

Patch / fix

  • linux linux_kernel 5.2.3
  • linux Debian 14, Debian 13, Debian 12 5.2.6-1

debian advisories DEBIAN-CVE-2019-14284

  • linux Ubuntu 16.04 LTS 4.4.0-161.189
  • linux Ubuntu 18.04 LTS 4.15.0-60.67
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1092.103
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1047.49
  • linux-gcp Ubuntu 16.04 LTS 4.15.0-1041.43
  • linux-gcp Ubuntu 18.04 LTS 4.15.0-1042.45
  • linux-hwe Ubuntu 16.04 LTS 4.15.0-60.67~16.04.1
  • linux-hwe Ubuntu 18.04 LTS 5.0.0-27.28~18.04.1

ubuntu advisories UBUNTU-CVE-2019-14284

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-rt SLE Real Time 12 SP4 4.12.14-8.3.1
  • kernel-syms-rt SLE Real Time 12 SP4 4.12.14-8.3.1
  • kernel-rt_debug SLE Real Time 12 SP4 4.12.14-8.3.1
  • kernel-source-rt SLE Real Time 12 SP4 4.12.14-8.3.1
  • kernel-source-rt Real Time Module 15 SP1 4.12.14-14.8.1
  • kernel-rt Real Time Module 15 SP1 4.12.14-14.8.1
  • kernel-syms-rt Real Time Module 15 SP1 4.12.14-14.8.1
  • kernel-rt_debug Real Time Module 15 SP1 4.12.14-14.8.1

suse advisories SUSE-SU-2019:2450-1SUSE-SU-2019:2430-1SUSE-SU-2019:2299-1SUSE-SU-2019:2263-1SUSE-SU-2019:2262-1SUSE-SU-2019:14157-1

  • kernel-syms openSUSE Leap 15.0 4.12.14-lp150.12.70.1
  • kernel-obs-qa openSUSE Leap 15.0 4.12.14-lp150.12.70.1
  • kernel-source openSUSE Leap 15.0 4.12.14-lp150.12.70.1
  • kernel-default openSUSE Leap 15.0 4.12.14-lp150.12.70.1
  • kernel-vanilla openSUSE Leap 15.0 4.12.14-lp150.12.70.1
  • kernel-kvmsmall openSUSE Leap 15.0 4.12.14-lp150.12.70.1
  • kernel-obs-build openSUSE Leap 15.0 4.12.14-lp150.12.70.1
  • kernel-syms openSUSE Leap 15.1 4.12.14-lp151.28.13.1

opensuse advisories openSUSE-SU-2019:1924-1openSUSE-SU-2019:1923-1

Is CVE-2019-14284 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-14284 updated cvss 5.0

kernel: denial of service in drivers/block/floppy.c by setup_format_params division-by-zero

  • Red Hat Enterprise Linux 5 kernel
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, kernel-alt, python-perf, +9 more
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 6.2 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.