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

The Secunia CSI 5.0 Beta - now available for testing
Find out more, take a free test drive, and share your opinion with us: 
http://secunia.com/blog/242 

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

TITLE:
Linux Kernel "CIFSFindNext()" Signedness Error Denial of Service
Vulnerability

SECUNIA ADVISORY ID:
SA45695

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/45695/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=45695

RELEASE DATE:
2011-08-25

DISCUSS ADVISORY:
http://secunia.com/advisories/45695/#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/45695/

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=45695

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 people to cause a DoS (Denial of Service).

The vulnerability is caused due to a signedness error within the
"CIFSFindNext()" function (fs/cifs/cifssmb.c), which can be exploited
to e.g. crash a client by sending specially crafted CIFS messages.

Successful exploitation requires that a malicious server is used.

SOLUTION:
Do not connect to untrusted servers.

PROVIDED AND/OR DISCOVERED BY:
Red Hat credits Darren Lavender.

ORIGINAL ADVISORY:
https://patchwork.kernel.org/patch/1088082/

Red Hat Bug #732869:
https://bugzilla.redhat.com/show_bug.cgi?id=732869

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

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