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TITLE:
Linux Kernel Socket Filter Memory Leak Weakness

SECUNIA ADVISORY ID:
SA42187

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/42187/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=42187

RELEASE DATE:
2010-11-12

DISCUSS ADVISORY:
http://secunia.com/advisories/42187/#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/42187/

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=42187

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:
Dan Rosenberg has reported a weakness in the Linux Kernel, which can
be exploited by malicious, local users to disclose certain system
information.

The weakness is caused due to the "sk_run_filter()" function in
net/core/filter.c not properly initializing a local array, which can
be exploited to disclose kernel stack memory.

SOLUTION:
Restrict access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Dan Rosenberg

ORIGINAL ADVISORY:
http://archives.neohapsis.com/archives/fulldisclosure/2010-11/0090.html
http://www.spinics.net/lists/netdev/msg146361.html

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.

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