From: Secunia Security Advisories (sec-advsecunia.com)
Date: Thu Sep 22 2005 - 05:55:59 CDT

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

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

Bist Du interessiert an einem neuen Job in IT-Sicherheit?

Secunia hat zwei freie Stellen als Junior und Senior Spezialist in IT-
Sicherheit:
http://secunia.com/secunia_vacancies/

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

TITLE:
Linux Kernel "fget()" Potential Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA16897

VERIFY ADVISORY:
http://secunia.com/advisories/16897/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
Local system

OPERATING SYSTEM:
Linux Kernel 2.6.x
http://secunia.com/product/2719/

DESCRIPTION:
Vasiliy Averin has reported a vulnerability in the Linux kernel,
which potentially can be exploited by malicious, local users to cause
a DoS (Denial of Service).

The vulnerability is caused due to the missing use of "sockfd_put()"
in "routing_ioctl()" on 64-bit platforms. This may be exploited to
overrun a reference counter via a large number of fget() requests.
Subsequent call to fput() will cause resources to be incorrectly
freed, which can potentially crash the kernel. Similar vulnerability
exists in "tiocgdev()" on x86-64 platforms.

The vulnerability only affects 64-bit platforms.

SOLUTION:
The vulnerability has been fixed in version 2.6.13.2.

PROVIDED AND/OR DISCOVERED BY:
Vasiliy Averin

ORIGINAL ADVISORY:
Kernel.org:
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.13.2

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

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

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

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

Unsubscribe: Secunia Security Advisories

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

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]