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TITLE:
Linux Kernel Denial of Service Vulnerabilities

SECUNIA ADVISORY ID:
SA22279

VERIFY ADVISORY:
http://secunia.com/advisories/22279/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

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

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

1) The "sys_perfmon()" function on Itanium (IA64) systems does not
correctly handle file descriptor reference counts, which can be
exploited to cause a DoS by consuming all available file
descriptors.

2) The "clip_mkip()" function in net/atm/clip.c may dereference a
previously freed pointer when processing received data, which can be
exploited to cause a kernel panic.

SOLUTION:
Update to version 2.6.18.

PROVIDED AND/OR DISCOVERED BY:
1) Reported by the vendor.
2) ADLab, Venustech info Ltd CHINA.

ORIGINAL ADVISORY:
http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b8444d00762703e1b6146fce12ce2684885f8bf6
http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fe26109a9dfd9327fdbe630fc819e1b7450986b2

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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:
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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.

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