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Secunia Security Advisory 50421

Secunia Security Advisory 50421
Posted Aug 28, 2012
Authored by Secunia | Site secunia.com

Secunia Security Advisory - 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).

tags | advisory, denial of service, kernel, local, vulnerability
systems | linux
MD5 | 6bb75c4480e8cc6f34acbdbcc6139d50

Secunia Security Advisory 50421

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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:
* 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=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/

----------------------------------------------------------------------

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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