CVE-2026-53100 wifi: mt76: fix deadlock in remain-on-channel

What is CVE-2026-53100?

CVE-2026-53100 is a medium-severity vulnerability in Linux kernel, published on 24 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: fix deadlock in remain-on-channel

mt76_remain_on_channel() and mt76_roc_complete() call mt76_set_channel() while already holding dev->mutex. Since mt76_set_channel() also acquires dev->mutex, this results in a deadlock.

Use __mt76_set_channel() instead of mt76_set_channel(). Add cancel_delayed_work_sync() for mac_work before acquiring the mutex in mt76_remain_on_channel() to prevent a secondary deadlock with the mac_work workqueue.

Weakness: CWE-667

Which versions are affected by CVE-2026-53100?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-53100?

Apply the vendor's patch.

Is CVE-2026-53100 being exploited?

There is no known exploitation of CVE-2026-53100 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2026-53100, DEBIAN-CVE-2026-53100, GHSA-26qq-fq9w-jrj5, UBUNTU-CVE-2026-53100.