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Secunia Security Advisory 36763

Secunia Security Advisory 36763
Posted Sep 18, 2009
Authored by Secunia | Site secunia.com

Secunia Security Advisory - Some vulnerabilities have been reported in the Linux Kernel, which can be exploited by malicious, local users to gain escalated privileges and by malicious people to cause a DoS (Denial of Service).

tags | advisory, denial of service, kernel, local, vulnerability
systems | linux
SHA-256 | e0b8f3c6733aa7c279fea85edfd23fd2f76174891181f770ac73b9727f1e2c2b

Secunia Security Advisory 36763

Change Mirror Download
----------------------------------------------------------------------

Do you have VARM strategy implemented?

(Vulnerability Assessment Remediation Management)

If not, then implement it through the most reliable vulnerability
intelligence source on the market.

Implement it through Secunia.

For more information visit:
http://secunia.com/advisories/business_solutions/

Alternatively request a call from a Secunia representative today to
discuss how we can help you with our capabilities contact us at:
sales@secunia.com

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

TITLE:
Linux Kernel Denial of Service and Privilege Escalation

SECUNIA ADVISORY ID:
SA36763

VERIFY ADVISORY:
http://secunia.com/advisories/36763/

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

1) An error exists within the "find_ie()" function in
net/wireless/scan.c, which can be exploited to trigger an infinite
loop by sending specially crafted packets.

Note: This does not affect versions prior to 2.6.30.

2) A boundary error within the "perf_copy_attr()" function in
kernel/perf_counter.c can be exploited to cause a buffer overflow by
e.g. passing specially crafted data via the "perf_counter_open()"
syscall.

Note: This does not affect versions prior to 2.6.31.

SOLUTION:
Fixed in the GIT repository.

PROVIDED AND/OR DISCOVERED BY:
1) Bob Copeland
2) Xiao Guangrong

ORIGINAL ADVISORY:
1)
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=fcc6cb0c13555e78c2d47257b6d1b5e59b0c419a
2)
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=b3e62e35058fc744ac794611f4e79bcd1c5a4b83

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

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/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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