Linux Kernel CPUFreq Proc Handler Integer Handling Vulnerability

BID:10201

Info

Linux Kernel CPUFreq Proc Handler Integer Handling Vulnerability

Bugtraq ID: 10201
Class: Design Error
CVE: CVE-2004-0228
Remote: No
Local: Yes
Published: Apr 23 2004 12:00AM
Updated: Jul 12 2009 04:06AM
Credit: Discovery of this vulnerability has been credited to Brad Spengler <[email protected]>.
Vulnerable: Linux kernel 2.6.5
+ S.u.S.E. Linux Personal 9.1 x86_64
 + S.u.S.E. Linux Personal 9.1 x86_64
 + S.u.S.E. Linux Personal 9.1
+ S.u.S.E. Linux Personal 9.1
+ SuSE Linux Enterprise Server 9
 Linux kernel 2.6.4
Linux kernel 2.6.3
Linux kernel 2.6.2
Linux kernel 2.6.1 -rc2
Linux kernel 2.6.1 -rc1
Linux kernel 2.6.1
Linux kernel 2.6 -test9-CVS
Linux kernel 2.6 -test9
Linux kernel 2.6 -test8
Linux kernel 2.6 -test7
Linux kernel 2.6 -test6
Linux kernel 2.6 -test5
Linux kernel 2.6 -test4
Linux kernel 2.6 -test3
Linux kernel 2.6 -test2
Linux kernel 2.6 -test11
Linux kernel 2.6 -test10
Linux kernel 2.6 -test1
Linux kernel 2.6
Linux kernel 2.5.69
Linux kernel 2.5.68
Linux kernel 2.5.67
Linux kernel 2.5.66
Linux kernel 2.5.65
Linux kernel 2.5.64
Linux kernel 2.5.63
Linux kernel 2.5.62
Linux kernel 2.5.61
Linux kernel 2.5.60
Linux kernel 2.5.59
Linux kernel 2.5.58
Linux kernel 2.5.57
Linux kernel 2.5.56
Linux kernel 2.5.55
Linux kernel 2.5.54
Linux kernel 2.5.53
Linux kernel 2.5.52
Linux kernel 2.5.51
Linux kernel 2.5.50
Linux kernel 2.5.49
Linux kernel 2.5.48
Linux kernel 2.5.47
Linux kernel 2.5.46
Linux kernel 2.5.45
Linux kernel 2.5.44
Linux kernel 2.5.43
Linux kernel 2.5.42
Linux kernel 2.5.41
Linux kernel 2.5.40
Linux kernel 2.5.39
Linux kernel 2.5.38
Linux kernel 2.5.37
Linux kernel 2.5.36
Linux kernel 2.5.35
Linux kernel 2.5.34
Linux kernel 2.5.33
Linux kernel 2.5.32
Linux kernel 2.5.31
Linux kernel 2.5.30
Linux kernel 2.5.29
Linux kernel 2.5.28
Linux kernel 2.5.27
Linux kernel 2.5.26
Linux kernel 2.5.25
Linux kernel 2.5.24
Linux kernel 2.5.23
Linux kernel 2.5.22
Linux kernel 2.5.21
Linux kernel 2.5.20
Linux kernel 2.5.19
Linux kernel 2.5.18
Linux kernel 2.5.17
Linux kernel 2.5.16
Linux kernel 2.5.15
Linux kernel 2.5.14
Linux kernel 2.5.13
Linux kernel 2.5.12
Linux kernel 2.5.11
Linux kernel 2.5.10
Linux kernel 2.5.9
Linux kernel 2.5.8
Linux kernel 2.5.7
Linux kernel 2.5.6
Linux kernel 2.5.5
Linux kernel 2.5.4
Linux kernel 2.5.3
Linux kernel 2.5.2
Linux kernel 2.5.1
Linux kernel 2.5 .0
Gentoo Linux 1.4
Not Vulnerable:

Discussion

Linux Kernel CPUFreq Proc Handler Integer Handling Vulnerability

A local integer handling vulnerability has been announced in the Linux kernel. It is reported that this vulnerability may be exploited by an unprivileged local user to obtain kernel memory contents. Additionally it is reported that a root user may exploit this issue to write to arbitrary regions of kernel memory, which may be a vulnerability in non-standard security enhanced systems where uid 0 does not have this privilege.

The vulnerability presents itself due to integer handling errors in the proc handler for cpufreq.

Exploit / POC

Linux Kernel CPUFreq Proc Handler Integer Handling Vulnerability

A proof of concept exploit has been provided by iSEC Security Research.

Solution / Fix

Linux Kernel CPUFreq Proc Handler Integer Handling Vulnerability

Solution:
The fix is available as a source code diff at:

http://www.kernel.org/pub/linux/kernel/v2.6/testing/cset/

and

http://www.kernel.org/pub/linux/kernel/v2.5/testing/cset/

RedHat has released an advisory (FEDORA-2004-111) to address various issues in Fedora. Please see the referenced advisory for more information.

SuSE Linux has released an advisory (SuSE-SA:2004:010) to address various issues in the Linux kernel. Please see the referenced advisory for more information.

Mandrake has released an advisory (MDKSA-2004:050) to address various issues in the Linux kernel. Please see referenced advisory for more information.

Gentoo Linux has released advisory GLSA 200407-02 addressing this and other issues. Please see the referenced advisory for further information about this issue and information on upgrading packages using emerge.

Conectiva Linux has released advisory CLA-2004:852 along with fixes dealing with this and other issues. Please see the referenced advisory for more information.


Linux kernel 2.6.3

Linux kernel 2.6.4

Linux kernel 2.6.5

References

Linux Kernel CPUFreq Proc Handler Integer Handling Vulnerability

References:

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report