CVE-2018-7755

Published: 08 March 2018

An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location of kernel code and data and bypass kernel security protections such as KASLR.

From the Ubuntu security team

It was discovered that an information leak vulnerability existed in the floppy driver in the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory).

Priority

Low

CVSS 3 base score: 5.5

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-24.26)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-130.156)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (3.13.0-153.203)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by local-2018-7755-1|65eea8edc315589d6c993cf12dbb5d0e9ef1fe4e
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1011.11)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-1062.71)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.4.0-1024.25)
linux-azure
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1014.14)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-1014.14~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable
(4.15.0-1023.24~14.04.1)
linux-azure-edge
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(4.18.0-1003.3~18.04.1)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-1014.14)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-euclid
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(was needs-triage ESM criteria)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-flo
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(abandoned)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-gcp
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1010.10)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-1014.14~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-gke
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(was needs-triage now end-of-life)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-goldfish
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(was needs-triage now end-of-life)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-grouper
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-hwe
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable

Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-24.26~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(4.18.0-8.9~18.04.1)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-24.26~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1012.12)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-1029.34)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [out of standard support])
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [was needs-triage now end-of-life])
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [out of standard support])
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.4.0-130.156~14.04.1)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-mako
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(abandoned)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-manta
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-oem
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1009.12)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.13.0-1031.35)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1013.14)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-1092.100)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable

Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-1095.100)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist