Secunia CSI7
Advisories
Research
Forums
Create Profile
Our Commitment
Database
Search
Advisories by Product
Advisories by Vendor
Terminology
Report Vulnerability
Insecure Library Loading
Less critical

Linux Kernel Multiple Vulnerabilities

-

Release Date:  2009-12-04    Last Update:  2010-06-16    Views:  6,096

Secunia Advisory SA37590

Where:

Local system

Impact:

Manipulation of data, Privilege escalation, DoS

Solution Status:

Partial Fix

Operating System:

CVE Reference(s):

Description


A security issue and some vulnerabilities have been reported in the Linux Kernel, which can be exploited by malicious, local users to manipulate certain data and cause a DoS (Denial of Service), and by malicious people to potentially compromise a vulnerable system.

1) The security issue is caused due to insecure permissions being set to driver attributes in sysfs ("/sys/bus/pci/drivers/megaraid_sas/poll_mode_io") and can be exploited to manipulate driver behaviour.

2) A locking error within the TTY subsystem can be exploited to cause a NULL pointer dereference.

3) A boundary error within the "hfs_bnode_read()" function in fs/hfs/bnode.c can be exploited to cause a buffer overflow by e.g. tricking a user into mounting and accessing a specially crafted HFS file system.

4) A vulnerability is caused due to an unspecified error when handling the EXT4_IOC_MOVE_EXT IOCTL. This can be exploited to e.g. cause a file system corruption by sending a specially crafted IOCTL.


Solution:
Update to version 2.6.33, which fixes vulnerabilities #1, #2, and #3.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1) Bryn M. Reeves, reported in a Red Hat bugreport.
2) Kyle Bader
3) Amerigo Wan, Red Hat
4) Brad Spengler

Original Advisory:
1) https://bugzilla.redhat.com/show_bug.cgi?id=526068
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=bb7d3f24c71e528989501617651b669fbed798cb
2) http://bugzilla.kernel.org/show_bug.cgi?id=14605
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=80e1e823989ec44d8e35bdfddadbddcffec90424
3) https://bugzilla.redhat.com/show_bug.cgi?id=540736
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=ec81aecb29668ad71f699f4e7b96ec46691895b6
4) http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
http://twitter.com/spendergrsec/status/6567167692
http://twitter.com/spendergrsec/status/6569596339

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Linux Kernel Multiple Vulnerabilities

No posts yet

-

You must be logged in to post a comment.



 Products Solutions Customers Partner Resources Company
 
 Corporate
Vulnerability Intelligence Manager (VIM)
Corporate Software Inspector (CSI)
Consumer
Personal Software Inspector (PSI)
Online Software Inspector (OSI)
 Industry
Compliance
Technology
Integration
 Customers
Testimonials
 VARS
MSSP
Technology Partners
References
 Factsheets
Reports
Webinars
Events
 About us
Careers
Memberships
Newsroom


 
© 2002-2014 Secunia ApS - Rued Langgaards Vej 8, 4th floor, DK-2300 Copenhagen, Denmark - +45 7020 5144
Terms & Conditions and Copyright - Privacy - Report Vulnerability