CVE-2026-46136

wifi: mt76: mt7921: fix a potential clc buffer length underflow

State: Published
Severity: Not scored
Published: May 28, 2026
Updated: Oct 15, 2026
Reserved: May 13, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	0c9318d49e501a5d50b02bd91a4813bde2353488 to before 2a79b1a492bcfa725383b6580cd93a6862308c85Affected 15173a1697236793e9e900b82fece6f99d41b2a7 to before e451c325b000b9a0081fd93bc6d103d6943d4b55Affected fa6ad88e023ddfa6c5dcdb466d159e89f451e305 to before 90cc573fd2f46ddbc2c329e7814b5ba3deb7b939Affected fa6ad88e023ddfa6c5dcdb466d159e89f451e305 to before 0aa63d33742b805d1a218d18d12b983cce4b2f7bAffected fa6ad88e023ddfa6c5dcdb466d159e89f451e305 to before a0111847f0b4f6023f6dd320114697514e024ba3Affected fa6ad88e023ddfa6c5dcdb466d159e89f451e305 to before 5373f8b19e568b5c217832b9bbef165bd2b2df14Affected 5c8cac512844ad593d31258e215908014381bee2Affected 6.1.75 to before 6.1.175Affected 6.6.14 to before 6.6.140Affected 6.7.2 to before 6.8Affected
LinuxLinux	6.8Affected before 6.8Not affected 6.1.175 through 6.1.Not affected 6.6.140 through 6.6.Not affected 6.12.88 through 6.12.Not affected 6.18.30 through 6.18.Not affected 7.0.7 through 7.0.*Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

0c9318d49e501a5d50b02bd91a4813bde2353488 to before 2a79b1a492bcfa725383b6580cd93a6862308c85Affected
15173a1697236793e9e900b82fece6f99d41b2a7 to before e451c325b000b9a0081fd93bc6d103d6943d4b55Affected
fa6ad88e023ddfa6c5dcdb466d159e89f451e305 to before 90cc573fd2f46ddbc2c329e7814b5ba3deb7b939Affected
fa6ad88e023ddfa6c5dcdb466d159e89f451e305 to before 0aa63d33742b805d1a218d18d12b983cce4b2f7bAffected
fa6ad88e023ddfa6c5dcdb466d159e89f451e305 to before a0111847f0b4f6023f6dd320114697514e024ba3Affected
fa6ad88e023ddfa6c5dcdb466d159e89f451e305 to before 5373f8b19e568b5c217832b9bbef165bd2b2df14Affected
5c8cac512844ad593d31258e215908014381bee2Affected
6.1.75 to before 6.1.175Affected
6.6.14 to before 6.6.140Affected
6.7.2 to before 6.8Affected

LinuxLinux

6.8Affected
before 6.8Not affected
6.1.175 through 6.1.*Not affected
6.6.140 through 6.6.*Not affected
6.12.88 through 6.12.*Not affected
6.18.30 through 6.18.*Not affected
7.0.7 through 7.0.*Not affected
7.1 and laterNot affected

References

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