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TITLE:
Linux Kernel Bluetooth Memory Leak Weaknesses

SECUNIA ADVISORY ID:
SA44466

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/44466/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=44466

RELEASE DATE:
2011-05-13

DISCUSS ADVISORY:
http://secunia.com/advisories/44466/#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/44466/

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=44466

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 "l2cap_sock_getsockopt_old()" function in
net/bluetooth/l2cap_sock.c does not properly initialise a structure
before copying it to userspace, which can be exploited to disclose
kernel stack memory.

2) The "rfcomm_sock_getsockopt_old()" function in
net/bluetooth/rfcomm/sock.c does not properly initialise a structure
before copying it to userspace, which can be exploited to disclose
kernel stack memory.

SOLUTION:
Restrict access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Marek Kroemeke and Filip Palian

ORIGINAL ADVISORY:
https://lkml.org/lkml/2011/5/8/153

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


Please Note:
Secunia recommends that you verify all advisories you receive by
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Secunia NEVER sends attached files with advisories.
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use those supplied by the vendor.

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