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CVE-2018-7273

Published: 21 February 2018

In the Linux kernel through 4.15.4, the floppy driver reveals the addresses of kernel functions and global variables using printk calls within the function show_floppy in drivers/block/floppy.c. An attacker can read this information from dmesg and use the addresses to find the locations of kernel code and data and bypass kernel security protections such as KASLR.

From the Ubuntu Security Team

It was discovered that the floppy driver in the Linux kernel could report kernel pointers via dmesg. An attacker could use this to expose sensitive information or in conjunction with another kernel vulnerability.

Notes

AuthorNote
sbeattie
kaslr info leak in floppy block driver

Priority

Negligible

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
linux-ti-omap4
Launchpad, Ubuntu, Debian
hirsute Does not exist

bionic Does not exist

focal Does not exist

upstream
Released (4.15~rc2)
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

groovy Does not exist

trusty Does not exist

xenial Does not exist

linux-armadaxp
Launchpad, Ubuntu, Debian
hirsute Does not exist

artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

groovy Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

upstream
Released (4.15~rc2)
This package is not directly supported by the Ubuntu Security Team
linux
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-36.40+21.04.1)
artful Ignored
(end of life)
cosmic Not vulnerable
(4.15.0-20.21)
disco Not vulnerable
(4.18.0-10.11)
eoan Not vulnerable
(5.0.0-13.14)
groovy Not vulnerable
(5.4.0-26.30)
trusty Ignored
(was needed ESM criteria)
xenial Ignored
(end of life, was pending)
bionic Not vulnerable
(4.15.0-10.11)
focal Not vulnerable
(5.4.0-9.12)
upstream
Released (4.15~rc2)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by ad67b74d2469d9b82aaa572d76474c95bc484d57
linux-riscv
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-10.12+21.04.1)
bionic Does not exist

eoan Does not exist

focal Not vulnerable
(5.4.0-24.28)
groovy Not vulnerable
(5.4.0-24.28)
trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-raspi
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-1008.11+21.04.1)
bionic Does not exist

eoan Does not exist

focal Not vulnerable
(5.4.0-1007.7)
groovy Not vulnerable
(5.4.0-1008.8)
trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-gke-5.4
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

bionic Not vulnerable
(5.4.0-1025.25~18.04.1)
groovy Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-hwe-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

hirsute Does not exist

focal Not vulnerable
(5.8.0-23.24~20.04.1)
groovy Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-gkeop-5.4
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

bionic Not vulnerable
(5.4.0-1001.1)
groovy Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-azure
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-1016.17+21.04.1)
artful Does not exist

bionic Not vulnerable
(4.15.0-1002.2)
cosmic Not vulnerable
(4.15.0-1009.9)
disco Not vulnerable
(4.18.0-1003.3)
eoan Not vulnerable
(5.0.0-1004.4)
focal Not vulnerable
(5.4.0-1006.6)
groovy Not vulnerable
(5.4.0-1010.10)
trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
upstream
Released (4.15~rc2)
xenial
Released (4.15.0-1013.13~16.04.2)
linux-aws
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-1018.20+21.04.1)
artful Does not exist

bionic Not vulnerable
(4.15.0-1001.1)
cosmic Not vulnerable
(4.15.0-1007.7)
disco Not vulnerable
(4.18.0-1002.3)
eoan Not vulnerable
(5.0.0-1004.4)
focal Not vulnerable
(5.4.0-1005.5)
groovy Not vulnerable
(5.4.0-1009.9)
trusty Ignored
(was needed ESM criteria)
upstream
Released (4.15~rc2)
xenial Ignored
(end of life, was needed)
linux-dell300x
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

bionic Not vulnerable
(4.15.0-1005.8)
upstream
Released (4.15~rc2)
groovy Does not exist

trusty Does not exist

xenial Does not exist

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

hirsute Does not exist

focal Not vulnerable
(5.4.0-1008.9)
upstream
Released (4.15~rc2)
groovy Does not exist

trusty Does not exist

xenial Does not exist

linux-oem-5.10
Launchpad, Ubuntu, Debian
bionic Does not exist

hirsute Does not exist

focal Not vulnerable
(5.10.0-1008.9)
groovy Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-hwe-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.4.0-37.41~18.04.1)
upstream
Released (4.15~rc2)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.4.0-1013.13~18.04.1)
upstream
Released (4.15~rc2)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

linux-linaro-omap
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

groovy Does not exist

trusty Does not exist

xenial Does not exist

upstream
Released (4.15~rc2)
bionic Does not exist

focal Does not exist

hirsute Does not exist

linux-linaro-shared
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

bionic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-flo
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.15~rc2)
xenial Ignored
(abandoned)
linux-aws-5.4
Launchpad, Ubuntu, Debian
groovy Does not exist

bionic Not vulnerable
(5.4.0-1018.18~18.04.1)
focal Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

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

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-aws-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1016.17~18.04.1)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

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

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Not vulnerable
(4.15.0-1030.31~16.04.1)
linux-azure-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1082.92)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

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

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.4.0-1020.20~18.04.1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-euclid
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Ignored
(was needs-triage ESM criteria)
linux-gcp
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.15.0-1001.1)
cosmic Not vulnerable
(4.15.0-1006.6)
disco Not vulnerable
(4.18.0-1002.3)
eoan Not vulnerable
(5.0.0-1004.4)
focal Not vulnerable
(5.4.0-1005.5)
groovy Not vulnerable
(5.4.0-1009.9)
hirsute Not vulnerable
(5.8.0-1015.15+21.04.1)
trusty Does not exist

upstream
Released (4.15~rc2)
xenial
Released (4.15.0-1014.14~16.04.1)
linux-gcp-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1071.81)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

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

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-gcp-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.4.0-1019.19~18.04.2)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Not vulnerable
(5.4.0-1033.35)
groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Ignored
(end of standard support, was needed)
linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1030.32)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-1011.11~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1011.12~18.04.1)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.15~rc2)
xenial Ignored
(end of life, was needed)
linux-grouper
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.15~rc2)
xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.18.0-13.14~18.04.1)
cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial
Released (4.15.0-24.26~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(5.0.0-15.16~18.04.1)
cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial
Released (4.15.0-24.26~16.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.15.0-1002.2)
cosmic Not vulnerable
(4.15.0-1008.8)
disco Not vulnerable
(4.18.0-1003.3)
eoan Not vulnerable
(5.0.0-1004.4)
focal Not vulnerable
(5.4.0-1004.4)
groovy Not vulnerable
(5.4.0-1009.9)
hirsute Not vulnerable
(5.8.0-1010.11+21.04.1)
trusty Does not exist

upstream
Released (4.15~rc2)
xenial Ignored
(end of life, was needed)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-lts-quantal
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-lts-saucy
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Ignored
(end of life, was ignored)
upstream
Released (4.15~rc2)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Ignored
(end of life, was needs-triage)
upstream
Released (4.15~rc2)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Ignored
(end of life, was ignored)
upstream
Released (4.15~rc2)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Ignored
(was needed ESM criteria)
upstream
Released (4.15~rc2)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.15~rc2)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.15~rc2)
xenial Ignored
(abandoned)
linux-manta
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.15~rc2)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.15.0-1002.3)
cosmic Not vulnerable
(4.15.0-1004.5)
disco Not vulnerable
(4.15.0-1021.24)
eoan Not vulnerable
(4.15.0-1035.40)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Ignored
(end of standard support, was needed)
linux-oem-5.6
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Not vulnerable
(5.6.0-1007.7)
groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-1010.11)
disco Not vulnerable
(5.0.0-1010.11)
eoan Not vulnerable
(5.0.0-1010.11)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1007.9)
cosmic Not vulnerable
(4.15.0-1007.9)
disco Not vulnerable
(4.15.0-1007.9)
eoan Not vulnerable
(4.15.0-1011.13)
focal Not vulnerable
(5.4.0-1005.5)
groovy Not vulnerable
(5.4.0-1009.9)
hirsute Not vulnerable
(5.8.0-1014.14+21.04.1)
trusty Does not exist

upstream
Released (4.15~rc2)
xenial Not vulnerable
(4.15.0-1007.9~16.04.1)
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

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1011.12~18.04.1)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-oracle-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.4.0-1019.19~18.04.1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Not vulnerable
(4.15.0-1006.7)
cosmic Not vulnerable
(4.15.0-1010.11)
disco Not vulnerable
(4.18.0-1005.7)
eoan Not vulnerable
(5.0.0-1006.6)
focal Not vulnerable
(5.4.0-1004.4)
groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Ignored
(end of standard support, was needed)
linux-raspi2-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1017.19~18.04.1)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic
Released (4.15.0-1053.57)
cosmic Does not exist

disco Not vulnerable
(5.0.0-1010.10)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.15~rc2)
xenial Ignored
(end of standard support, was needed)

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N