CVE-2026-43343 Details
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.
A vulnerability exists in the Linux kernel's USB gadget function 'f_subset', where the reference count management is flawed. The function 'geth_alloc()' increases the reference count, but 'geth_free()' does not decrease it. This oversight hinders the proper configuration of attributes through 'configfs' after the function has been unlinked. The issue has been addressed by modifying 'geth_free()' to correctly decrement the reference count, ensuring proper cleanup.
The vulnerability has been fixed in the Linux kernel stable tree. Users can upgrade to the latest version of the stable kernel to address this issue.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/23e4851ce348a329d974e84e828155dda9f52122 | kernel.org | Patch |
| https://git.kernel.org/stable/c/3d436670b47415da042452618fb5d8e317ab095f | kernel.org | Patch |
| https://git.kernel.org/stable/c/3f5bfc550a40d7493b1cf09540ed6b412b3b82be | kernel.org | Patch |
| https://git.kernel.org/stable/c/75776a055b656873319c3830fed471daef3ceb23 | kernel.org | Patch |
| https://git.kernel.org/stable/c/a932b171554714b1bca313b853c7aa9f2930f9aa | kernel.org | Patch |
| https://git.kernel.org/stable/c/caa27923aacd8a5869207842f2ab1657c6c0c7bc | kernel.org | Patch |
| https://git.kernel.org/stable/c/cc8ec610cd14c093a19371691a7ce1ee5421e829 | kernel.org | Patch |
| https://git.kernel.org/stable/c/d7d702407b61e96286a15b6e715572f541a8d41c | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-Other | Weakness Not in a Standard CWE Category | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 3.11, < 5.10.253 >= 5.11, < 5.15.203 >= 5.16, < 6.1.168 >= 6.2, < 6.6.134 >= 6.7, < 6.12.81 >= 6.13, < 6.18.22 >= 6.19, < 6.19.12 7.0 rc1 7.0 rc2 7.0 rc3 7.0 rc4 7.0 rc5 7.0 rc6 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 18, 2026 | Initial Analysis | [email protected] |
| May 8, 2026 | New CVE Received | kernel.org |