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Secunia outshines its competitors and receives the Frost & Sullivan’s Global 2010 Customer Value Enhancement Award. Based on its recent analysis of the vulnerability research market, Frost & Sullivan concluded:

"Secunia provides tremendous value for their customers, end-users, and to other security vendors."

Read more: http://secunia.com/blog/117/


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TITLE:
Linux Kernel 64bit Maximum Stack Size Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA41002

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/41002/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=41002

RELEASE DATE:
2010-08-18

DISCUSS ADVISORY:
http://secunia.com/advisories/41002/#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/41002/

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=41002

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

The vulnerability is caused due to the kernel incorrectly setting the
maximum stack size for 32bit applications in a 64bit environment,
which can be exploited to e.g. trigger a "BUG()" or cause
out-of-memory conditions via specially crafted applications.

Successful exploitation requires a 64bit system.

SOLUTION:
Restrict access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Brad Spengler

ORIGINAL ADVISORY:
http://grsecurity.net/~spender/64bit_dos.c

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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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.

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