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TITLE:
Linux Kernel Two Vulnerabilities

SECUNIA ADVISORY ID:
SA50421

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/50421/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=50421

RELEASE DATE:
2012-08-28

DISCUSS ADVISORY:
http://secunia.com/advisories/50421/#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/50421/

ONLY AVAILABLE IN CUSTOMER AREA:
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 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
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https://ca.secunia.com/?page=viewadvisory&vuln_id=50421

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:
Two vulnerabilities have been reported in Linux Kernel, which can be
exploited by malicious, local users or malicious people to cause a
DoS (Denial of Service).

1) A NULL pointer dereference error when handling deletion of
directory hierarchies can be exploited to cause a kernel crash by
running "rm -rf" on a large directory hierarchy.

Successful exploitation requires an ext4 filesystem on a RAID
device.

2) A NULL pointer dereference error in the i.MX clock infrastructure
due to missing clock conversion can be exploited to cause a kernel
crash by e.g. tricking a user into playing a specially crafted WAV
file using aplay.

SOLUTION:
Update to version 3.4.10 or 3.5.3.

PROVIDED AND/OR DISCOVERED BY:
1) The vendor credits Maciej Zenczykowski and Marti Raudsepp.
2) The vendor credits Javier Martin.

ORIGINAL ADVISORY:
Kernel.org:
http://www.kernel.org/pub/linux/kernel/v3.0/ChangeLog-3.4.10
http://www.kernel.org/pub/linux/kernel/v3.0/ChangeLog-3.5.3

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/

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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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