CVE-2026-53103 wifi: mt76: mt7925: fix potential deadlock in mt7925_roc_abort_sync

What is CVE-2026-53103?

CVE-2026-53103 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: mt7925: fix potential deadlock in mt7925_roc_abort_sync

roc_abort_sync() can deadlock with roc_work(). roc_work() holds dev->mt76.mutex, while cancel_work_sync() waits for roc_work() to finish. If the caller already owns the same mutex, both sides block and no progress is possible.

This deadlock can occur during station removal when mt76_sta_state() -> mt76_sta_remove() -> mt7925_mac_sta_remove_link() -> mt7925_mac_link_sta_remove() -> mt7925_roc_abort_sync() invokes cancel_work_sync() while roc_work() is still running and holding dev->mt76.mutex.

This avoids the mutex deadlock and preserves exactly-once work ownership.

Weakness: CWE-667

Which versions are affected by CVE-2026-53103?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-53103?

Apply the vendor's patch.

Is CVE-2026-53103 being exploited?

There is no known exploitation of CVE-2026-53103 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-2026-53103, DEBIAN-CVE-2026-53103, GHSA-jp54-xjfc-9fqx, ROOT-OS-DEBIAN-13-CVE-2026-53103, ROOT-OS-UBUNTU-2404-CVE-2026-53103, UBUNTU-CVE-2026-53103.