Secunia Security Advisory - 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.
d06563b420bd41d6a168699a2c7ab3f4c7772cf3a758be9435a489e77ef24dc6
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TITLE:
Red Hat update for kernel
SECUNIA ADVISORY ID:
SA40420
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RELEASE DATE:
2010-07-03
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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:
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DEEP LINKS:
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EXTENDED DESCRIPTION:
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EXTENDED SOLUTION:
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EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
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