CVE-2026-46136 Details
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921: fix a potential clc buffer length underflow The buf_len is used to limit the iterations for retrieving the country power setting and may underflow under certain conditions due to changes in the power table in CLC. This underflow leads to an almost infinite loop or an invalid power setting resulting in driver initialization failure.
A buffer length underflow vulnerability has been identified in the Linux kernel's WiFi MT76 MT7921 driver. This issue arises when the buffer length is used to limit iterations for retrieving country power settings. Under certain conditions, changes in the power table can cause the buffer length to underflow, leading to an almost infinite loop or an invalid power setting. This ultimately results in a failure to initialize the driver.
Users can apply the latest patches available in the Linux kernel stable tree to address this vulnerability. Instructions for downloading the patched version can be found in the Linux kernel Git repository.
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
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/0aa63d33742b805d1a218d18d12b983cce4b2f7b | kernel.org | Patch |
| https://git.kernel.org/stable/c/2a79b1a492bcfa725383b6580cd93a6862308c85 | kernel.org | Patch |
| https://git.kernel.org/stable/c/5373f8b19e568b5c217832b9bbef165bd2b2df14 | kernel.org | Patch |
| https://git.kernel.org/stable/c/90cc573fd2f46ddbc2c329e7814b5ba3deb7b939 | kernel.org | Patch |
| https://git.kernel.org/stable/c/a0111847f0b4f6023f6dd320114697514e024ba3 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e451c325b000b9a0081fd93bc6d103d6943d4b55 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.1.75, < 6.1.175 >= 6.6.14, < 6.6.140 >= 6.7.2, < 6.12.88 >= 6.13, < 6.18.30 >= 6.19, < 7.0.7 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 24, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 1, 2026 | CVE Modified | kernel.org |
| May 28, 2026 | New CVE Received | kernel.org |