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TITLE:
Linux Kernel Memory Leak Weaknesses

SECUNIA ADVISORY ID:
SA42061

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/42061/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=42061

RELEASE DATE:
2010-11-03

DISCUSS ADVISORY:
http://secunia.com/advisories/42061/#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/42061/

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=42061

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:
Some weaknesses have been reported in the Linux Kernel, which can be
exploited by malicious, local users to disclose certain system
information.

1) The "ax25_getname()" function in net/ax25/af_ax25.c is not
properly initialising a member of a certain structure before copying
it to userspace, which can be exploited to disclose kernel stack
memory.

2) The "packet_getname_spkt()" and "packet_getname()" functions in
net/packet/af_packet.c are not properly initialising members of
certain structures before copying them to userspace, which can be
exploited to disclose kernel stack memory.

Successful exploitation of this weakness requires "CAP_NET_RAW"
capabilities.

SOLUTION:
Restrict access to trusted users.

PROVIDED AND/OR DISCOVERED BY:
Vasiliy Kulikov

ORIGINAL ADVISORY:
1) http://permalink.gmane.org/gmane.linux.network/176803
2) http://permalink.gmane.org/gmane.linux.network/176804

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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Please Note:
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use those supplied by the vendor.

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