Description

The dccp_rcv_state_process function in net/dccp/input.c in the Datagram Congestion Control Protocol (DCCP) implementation in the Linux kernel before 2.6.38 does not properly handle packets for a CLOSED endpoint, which allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) by sending a DCCP-Close packet followed by a DCCP-Reset packet.

References

http://downloads.avaya.com/css/P8/documents/100145416

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=720dc34bbbe9493c7bd48b2243058b4e447a929d

http://openwall.com/lists/oss-security/2011/03/08/19

http://openwall.com/lists/oss-security/2011/03/08/4

http://rhn.redhat.com/errata/RHSA-2011-0833.html

http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38

http://www.securityfocus.com/bid/46793

https://bugzilla.redhat.com/show_bug.cgi?id=682954

Details

Risk Information

CVSS v2