CVE-2011-1093

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.

Category

7.8
CVSS
Severity: High
CVSS 2.0 •
EPSS 1.22% Top 25%
Vendor Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=720dc34bbbe9493c7bd48b2243058b4e447a929d
http://www.securityfocus.com/bid/46793 vdb entry third party advisory
http://rhn.redhat.com/errata/RHSA-2011-0833.html third party advisory vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=682954 issue tracking third party advisory patch
http://openwall.com/lists/oss-security/2011/03/08/4 mailing list third party advisory patch
http://openwall.com/lists/oss-security/2011/03/08/19 mailing list third party advisory patch
http://downloads.avaya.com/css/P8/documents/100145416 third party advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38 broken link

Frequently Asked Questions

What is the severity of CVE-2011-1093?
CVE-2011-1093 has been scored as a high severity vulnerability.
How to fix CVE-2011-1093?
To fix CVE-2011-1093, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-1093 being actively exploited in the wild?
It is possible that CVE-2011-1093 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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