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TITLE:
Red Hat update for kernel

SECUNIA ADVISORY ID:
SA40420

VERIFY ADVISORY:
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http://secunia.com/advisories/40420/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=40420

RELEASE DATE:
2010-07-03

DISCUSS ADVISORY:
http://secunia.com/advisories/40420/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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 * Impact
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 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/40420/

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DESCRIPTION:
Red Hat has issued an update for the kernel. This fixes some
vulnerabilities, which can be exploited by malicious, local users to
cause a DoS (Denial of Service), bypass certain security
restrictions, and potentially gain escalated privileges, and by
malicious people to cause a DoS.

For more information:
SA38229
SA38502
SA38594

1) An error within the SCTP subsystem can be exploited to cause a
crash by sending a specially crafted packet.

2) An error exists within the implementation of the TIPC protocol,
which can be exploited by malicious, local users to cause a NULL
pointer dereference by sending datagrams through AF_TIPC before
entering the network mode.

3) An error exists within the GFS2 implementation, which can be
exploited to cause a memory corruption and e.g. cause a DoS or gain
escalated privileges.

Successful exploitation requires that the attacker has write access
to a GFS2 file system mounted with the "quota=on" or "quota=account"
options.

4) A race condition within the "find_keyring_by_name()" function in
security/keys/keyring.c can be exploited to access freed memory and
e.g. cause a system panic or gain escalated privileges.

5) An error exists within the "gfs2_set_flags()" function, which can
be exploited to change certain file attributes of files on an GFS2
file system.

SOLUTION:
Updated packages are available via Red Hat Network.

Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

PROVIDED AND/OR DISCOVERED BY:
Red Hat credits:
1) Jukka Taimisto and Olli Jarva of Codenomicon Ltd, Nokia Siemens
Networks, and Wind River on behalf of their customer.
3) Mario Mikocevic
5) Dan Rosenberg

ORIGINAL ADVISORY:
RHSA-2010-0504:
https://rhn.redhat.com/errata/RHSA-2010-0504.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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