----------------------------------------------------------------------

Ovum says ad hoc tools are out-dated. The best practice approach?
Fast vulnerability intelligence, threat handling, and setup in one tool.

Read the new report on the Secunia VIM:
http://secunia.com/products/corporate/vim/ovum_2011_request/ 

----------------------------------------------------------------------

TITLE:
Linux Kernel ext4 Extent Splitting Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA46489

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/46489/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=46489

RELEASE DATE:
2011-10-25

DISCUSS ADVISORY:
http://secunia.com/advisories/46489/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/46489/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=46489

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service).

An error within the implementation of the ext4 file system when
splitting extents can be exploited to cause a "BUG_ON()".

The vulnerability is reported in version 2.6.39.4. Other versions may
also be affected.

SOLUTION:
Fixed in the GIT repository.

Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

PROVIDED AND/OR DISCOVERED BY:
Red Hat credits Zheng Liu.

ORIGINAL ADVISORY:
Red Hat Bug #747642:
https://bugzilla.redhat.com/show_bug.cgi?id=747942

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=667eff35a1f56fa74ce98a0c7c29a40adc1ba4e3

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

Unsubscribe: Secunia Security Advisories
http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org

----------------------------------------------------------------------