Copyright © 2012 Red Hat, Inc. All rights reserved. Low 2026-05-28T00:00:00 kernel: wifi: mt76: mt7921: fix a potential clc buffer length underflow 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CWE-124

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 flaw was found in the Linux kernel's wifi: mt76: mt7921 component. A buffer length underflow in the CLC (Country Logic Control) mechanism can occur due to changes in the power table. This issue may lead to an almost infinite loop or an invalid power setting, resulting in a Denial of Service (DoS) by causing driver initialization failure.

Red Hat Enterprise Linux 10 Fix deferred kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Fix deferred kernel Red Hat Enterprise Linux 9 Fix deferred kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-46136 https://nvd.nist.gov/vuln/detail/CVE-2026-46136 https://lore.kernel.org/linux-cve-announce/2026052818-CVE-2026-46136-ae9a@gregkh/T