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CVE-2007-3732

Published: 7 November 2019

In Linux 2.6 before 2.6.23, the TRACE_IRQS_ON function in iret_exc calls a C function without ensuring that the segments are set properly. The kernel's %fs needs to be restored before the call in TRACE_IRQS_ON and before enabling interrupts, so that "current" references work. Without this, "current" used in the window between iret_exc and the middle of error_code where %fs is reset, would crash.

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

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
upstream
Released (2.6.23~rc1)
precise Not vulnerable
(3.1.0-1.1)
trusty Not vulnerable
(3.11.0-12.19)
wily Not vulnerable
(3.19.0-15.15)
xenial Not vulnerable
(4.2.0-16.19)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by a10d9a71bafd3a283da240d2868e71346d2aef6f
linux-armadaxp
Launchpad, Ubuntu, Debian
upstream
Released (2.6.23~rc1)
precise Not vulnerable
(3.2.0-1600.1)
trusty Does not exist

wily Does not exist

xenial Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-linaro-omap
Launchpad, Ubuntu, Debian
upstream
Released (2.6.23~rc1)
precise Ignored
(end of life)
trusty Does not exist

wily Does not exist

xenial Does not exist

linux-linaro-shared
Launchpad, Ubuntu, Debian
upstream
Released (2.6.23~rc1)
precise Ignored
(end of life)
trusty Does not exist

wily Does not exist

xenial Does not exist

linux-linaro-vexpress
Launchpad, Ubuntu, Debian
upstream
Released (2.6.23~rc1)
precise Ignored
(end of life)
trusty Does not exist

wily Does not exist

xenial Does not exist

linux-lts-quantal
Launchpad, Ubuntu, Debian
upstream
Released (2.6.23~rc1)
precise Ignored
(end of life)
trusty Does not exist

wily Does not exist

xenial Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-qcm-msm
Launchpad, Ubuntu, Debian
upstream
Released (2.6.23~rc1)
precise Ignored
(end of life)
trusty Does not exist

wily Does not exist

xenial Does not exist

linux-ti-omap4
Launchpad, Ubuntu, Debian
upstream
Released (2.6.23~rc1)
precise Not vulnerable
(3.0.0-1401.2)
trusty Does not exist

wily Does not exist

xenial Does not exist

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

trusty Does not exist
(trusty was not-affected [3.4.0-3.14])
wily Not vulnerable
(3.4.0-3.14)
xenial Not vulnerable
(3.4.0-4.27)
upstream
Released (2.6.23~rc1)
linux-grouper
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
wily Does not exist

xenial Does not exist

upstream
Released (2.6.23~rc1)
linux-lts-raring
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

wily Does not exist

xenial Does not exist

upstream
Released (2.6.23~rc1)
linux-flo
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was not-affected [3.4.0-3.10])
upstream
Released (2.6.23~rc1)
wily Not vulnerable
(3.4.0-3.10)
xenial Not vulnerable
(3.4.0-5.22)
linux-lts-saucy
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

upstream
Released (2.6.23~rc1)
wily Does not exist

xenial Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
precise Not vulnerable
(3.13.0-24.46~precise1)
trusty Does not exist

upstream
Released (2.6.23~rc1)
wily Does not exist

xenial Does not exist

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

trusty Does not exist
(trusty was not-affected [3.16.0-25.33~14.04.2])
upstream
Released (2.6.23~rc1)
wily Does not exist

xenial Does not exist

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

trusty Does not exist
(trusty was not-affected [3.19.0-18.18~14.04.1])
upstream
Released (2.6.23~rc1)
wily Does not exist

xenial Does not exist

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

trusty Does not exist
(trusty was not-affected [4.2.0-18.22~14.04.1])
upstream
Released (2.6.23~rc1)
wily Does not exist

xenial Does not exist

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

trusty Not vulnerable
(4.4.0-13.29~14.04.1)
upstream
Released (2.6.23~rc1)
wily Does not exist

xenial Does not exist

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

trusty Does not exist
(trusty was ignored)
upstream
Released (2.6.23~rc1)
wily Does not exist

xenial Does not exist

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

trusty Does not exist
(trusty was not-affected [3.4.0-3.14])
upstream
Released (2.6.23~rc1)
wily Not vulnerable
(3.4.0-5.28)
xenial Not vulnerable
(3.4.0-7.40)
linux-manta
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was not-affected [3.4.0-6.25])
upstream
Released (2.6.23~rc1)
wily Not vulnerable
(3.4.0-6.25)
xenial Does not exist

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

trusty Does not exist

upstream
Released (2.6.23~rc1)
wily Not vulnerable
(4.2.0-1008.12)
xenial Not vulnerable
(4.2.0-1013.19)

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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H