CVE-2026-46074 Details
Description
In the Linux kernel, the following vulnerability has been resolved: spi: ch341: fix memory leaks on probe failures Make sure to deregister the controller, disable pins, and kill and free the RX URB on probe failures to mirror disconnect and avoid memory leaks and use-after-free. Also add an explicit URB kill on disconnect for symmetry (even if that is not strictly required as USB core would have stopped it in the current setup).
A memory leak vulnerability has been identified in the Linux kernel's CH341 SPI driver. This issue arises during the probe phase when the driver fails to properly deregister the controller, disable pins, and free the received USB Request Block (URB). As a result, the driver may leave behind dangling pointers and unreleased memory, leading to potential use-after-free conditions. The vulnerability affects the Linux kernel stable tree, specifically in versions through 6.11.
Users can upgrade to a patched version of the Linux kernel that addresses this vulnerability. The latest stable version can be downloaded from the official Linux kernel website.
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/5c6518633702d7f7b1153e9d8e042af847f11ef3 | kernel.org | Patch |
| https://git.kernel.org/stable/c/9bee2faf9e21c796d0d222c9d84a98f41bd303a0 | kernel.org | Patch |
| https://git.kernel.org/stable/c/b99e3ddb91b499d920e63a2daff8880be68cfe9e | kernel.org | Patch |
| https://git.kernel.org/stable/c/ff8a7996dc8bf433efe2126ffdaee5b374a89e30 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-401 | Missing Release of Memory after Effective Lifetime | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.11, < 6.12.86 >= 6.13, < 6.18.27 >= 6.19, < 7.0.4 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 24, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 27, 2026 | New CVE Received | kernel.org |