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

Type: advisorySources: OSV

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.

Products
Kernel
Affected versions
Not specified
Fixed versions
6.1.175, 6.12.88, 6.18.30, 6.6.140, 7.0.7
CVEs
CVE-2026-46136
Confirmed fixed CVEs
Not specified
Updated in this feed
7 Nov 2026, 01:02 UTC · Revision 1

Source evidence

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

core-osv · Original source

Published 28 May 2026, 09:35 UTC

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.

osv:CVE-2026-46136

Kernel

Fixed versions: 6.1.175, 6.6.140, 6.12.88, 6.18.30, 7.0.7

Complete source record
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    "title": "wifi: mt76: mt7921: fix a potential clc buffer length underflow",
    "summary": "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.",
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