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TITLE:
Red Hat update for kernel

SECUNIA ADVISORY ID:
SA45897

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/45897/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=45897

RELEASE DATE:
2011-09-07

DISCUSS ADVISORY:
http://secunia.com/advisories/45897/#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/45897/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=45897

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:
Red Hat has issued an update for the kernel. This fixes some
weaknesses and vulnerabilities, which can be exploited by malicious,
local users to disclose certain system information, cause a DoS
(Denial of Service), and gain escalated privileges and by malicious,
local users in a guest virtual machine and malicious people to cause
a DoS.

For more information:
SA44754
SA45835

1) A NULL pointer dereference error in the Stream Control
Transmission Protocol (SCTP) implementation can be exploited to cause
a DoS by sending specially crafted SCTP packets.

2) An error within the SAHF instruction emulation can be exploited by
privileged users within a guest system to crash the host system.

Successful exploitation of this weakness requires that the host
system is not using hardware assisted paging (HAP).

SOLUTION:
Updated packages are available via Red Hat Network.

Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

ORIGINAL ADVISORY:
RHSA-2011:1212-01:
https://rhn.redhat.com/errata/RHSA-2011-1212.html

Red Hat Bug#714867:
https://bugzilla.redhat.com/show_bug.cgi?id=714867

Xen Rev#15644:
http://xenbits.xen.org/hg/xen-3.1-testing.hg/rev/15644

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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