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CVE-2019-14284

Published: 26 July 2019

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.

From the Ubuntu security team

It was discovered that the floppy driver in the Linux kernel did not properly validate ioctl() calls, leading to a division-by-zero. A local attacker could use this to cause a denial of service (system crash).

Priority

Medium

CVSS 3 base score: 6.2

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-60.67)
disco
Released (5.0.0-27.28)
eoan Not vulnerable
(5.2.0-10.11)
precise Ignored
(was needs-triage ESM criteria)
trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (5.3~rc1)
xenial
Released (4.4.0-161.189)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by f3554aeb991214cbfafd17d55e2bfddb50282e32
linux-aws
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1047.49)
disco
Released (5.0.0-1014.16)
eoan Not vulnerable
(5.3.0-1003.3)
precise Does not exist

trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (5.3~rc1)
xenial
Released (4.4.0-1092.103)
linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-1021.24~18.04.1)
disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-aws-hwe
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial
Released (4.15.0-1047.49~16.04.1)
linux-azure
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1018.19~18.04.1)
disco
Released (5.0.0-1018.19)
eoan Not vulnerable
(5.0.0-1018.19)
precise Does not exist

trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (5.3~rc1)
xenial
Released (4.15.0-1056.61)
linux-azure-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1007.8~18.04.1)
disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-azure-edge
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1018.19~18.04.1)
disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial
Released (4.15.0-1056.61)
linux-euclid
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Ignored
(was needs-triage now end-of-life)
linux-flo
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Ignored
(abandoned)
linux-gcp
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1042.45)
disco
Released (5.0.0-1015.15)
eoan Not vulnerable
(5.0.0-1015.15)
precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial
Released (4.15.0-1041.43)
linux-gcp-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1008.9~18.04.1)
disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1042.45)
disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-gke
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Ignored
(end-of-life)
linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1041.43)
disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1015.15~18.04.1)
disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-goldfish
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Ignored
(end-of-life)
linux-grouper
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-27.28~18.04.1)
disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial
Released (4.15.0-60.67~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(was pending \[5.3.0-19.20~18.04.2\] now end-of-life)
disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial
Released (4.15.0-60.67~16.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1043.43)
disco
Released (5.0.0-1015.16)
eoan Not vulnerable
(5.0.0-1015.16)
precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial
Released (4.4.0-1056.63)
linux-lts-trusty
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

eoan Does not exist

precise Ignored
(was needs-triage ESM criteria)
trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-lts-vivid
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-lts-wily
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

eoan Does not exist

precise Does not exist

trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (5.3~rc1)
xenial Does not exist

linux-maguro
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-mako
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Ignored
(abandoned)
linux-manta
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1056.65)
disco Ignored
(was pending \[4.15.0-1056.65\] now end-of-life)
eoan
Released (4.15.0-1059.68)
precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Ignored
(was needs-triage now end-of-life)
linux-oem-5.4
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1020.22)
disco Ignored
(was pending \[5.0.0-1022.24\] now end-of-life)
eoan
Released (5.0.0-1022.24)
precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1022.25)
disco
Released (5.0.0-1004.8)
eoan Not vulnerable
(5.3.0-1002.2)
precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial
Released (4.15.0-1022.25~16.04.1)
linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-1007.12~18.04.1)
disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1044.47)
disco
Released (5.0.0-1015.15)
eoan Not vulnerable
(5.0.0-1015.15)
precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial
Released (4.4.0-1120.129)
linux-raspi2-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1017.19~18.04.1)
eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1062.69)
disco
Released (5.0.0-1019.20)
eoan Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial
Released (4.4.0-1124.130)