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CVE-2015-2672

Published: 2 May 2016

The xsave/xrstor implementation in arch/x86/include/asm/xsave.h in the Linux kernel before 3.19.2 creates certain .altinstr_replacement pointers and consequently does not provide any protection against instruction faulting, which allows local users to cause a denial of service (panic) by triggering a fault, as demonstrated by an unaligned memory operand or a non-canonical address memory operand.

Notes

AuthorNote
jdstrand
android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.10 and earlier preview kernels
linux-lts-saucy no longer receives official support
linux-lts-quantal no longer receives official support
sbeattie
introduced by https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f31a9f7c71691569359fa7fb8b0acaa44bce0324 (v3.17-rc1)

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
lucid Not vulnerable

precise Not vulnerable

trusty Not vulnerable

upstream
Released (4.0~rc3)
utopic Not vulnerable

vivid Not vulnerable
(3.19.0-10.10)
wily Not vulnerable
(3.19.0-15.15)
Patches:
Introduced by

f31a9f7c71691569359fa7fb8b0acaa44bce0324

Fixed by 06c8173eb92bbfc03a0fe8bb64315857d0badd06
linux-armadaxp
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Not vulnerable

trusty Does not exist

upstream
Released (4.0~rc3)
utopic Does not exist

vivid Does not exist

wily Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-ec2
Launchpad, Ubuntu, Debian
lucid Not vulnerable

precise Does not exist

trusty Does not exist

upstream
Released (4.0~rc3)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.0~rc3)
utopic Not vulnerable

vivid Not vulnerable

wily Not vulnerable

linux-fsl-imx51
Launchpad, Ubuntu, Debian
lucid Ignored
(end of life)
precise Does not exist

trusty Does not exist

upstream
Released (4.0~rc3)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.0~rc3)
utopic Not vulnerable

wily Not vulnerable

vivid Not vulnerable

linux-grouper
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.0~rc3)
utopic Ignored
(end of life)
vivid Does not exist

wily Does not exist

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

precise Ignored
(end of life)
trusty Does not exist

upstream
Released (4.0~rc3)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Ignored
(end of life)
trusty Does not exist

upstream
Released (4.0~rc3)
utopic Does not exist

vivid Does not exist

wily Does not exist

linux-linaro-vexpress
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Ignored
(end of life)
trusty Does not exist

upstream
Released (4.0~rc3)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Not vulnerable

trusty Does not exist

upstream
Released (4.0~rc3)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Ignored
(end of life, was needs-triage)
trusty Does not exist

upstream
Released (4.0~rc3)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Not vulnerable

trusty Does not exist

upstream
Released (4.0~rc3)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Not vulnerable

trusty Does not exist

upstream
Released (4.0~rc3)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was not-affected)
upstream
Released (4.0~rc3)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was not-affected [3.19.0-18.18~14.04.1])
upstream
Released (4.0~rc3)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.0~rc3)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.0~rc3)
utopic Not vulnerable

wily Not vulnerable

vivid Not vulnerable

linux-manta
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.0~rc3)
utopic Not vulnerable

wily Not vulnerable

vivid Not vulnerable

linux-mvl-dove
Launchpad, Ubuntu, Debian
lucid Ignored
(end of life)
precise Does not exist

trusty Does not exist

upstream
Released (4.0~rc3)
utopic Does not exist

vivid Does not exist

wily Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
lucid Ignored
(end of life)
precise Ignored
(end of life)
trusty Does not exist

upstream
Released (4.0~rc3)
utopic Does not exist

vivid Does not exist

wily Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.0~rc3)
wily Not vulnerable
(4.2.0-1008.12)
vivid Does not exist

linux-ti-omap4
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Not vulnerable

trusty Does not exist

upstream
Released (4.0~rc3)
utopic Does not exist

vivid Does not exist

wily Does not exist

Severity score breakdown

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