In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7925: cancel pending mlo_pm_work If the device is reset, suspended… (CVE-2026-89523)
A vulnerability in the Linux kernel's mt76 wifi driver for the mt7925 device was resolved. The issue involved pending work (mlo_pm_work) that could run after the device was reset, suspended, or unregistered, potentially accessing freed memory or sending commands when firmware was unavailable. The fix adds cancellation of this pending work in all relevant teardown and suspend paths to prevent invalid device state access.
AI Analysis
Technical Summary
The Linux kernel mt76 driver for the mt7925 wifi device had a vulnerability where pending mlo_pm_work could execute after device reset, suspend, or unregistration. This could lead to accessing vif/bss data that may have been freed or sending MCU commands when firmware was not available. The patch ensures cancel_delayed_work_sync(&dev->mlo_pm_work) is called in all relevant teardown and suspend functions, preventing the work from running in invalid device states.
Potential Impact
If exploited, the vulnerability could cause use-after-free conditions or invalid firmware command transmissions, potentially leading to kernel instability or crashes. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix has been implemented in the Linux kernel by adding cancel_delayed_work_sync calls in all relevant device teardown and suspend paths. Users should update to a kernel version that includes this patch. No additional mitigation is required beyond applying the official fix.
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7925: cancel pending mlo_pm_work If the device is reset, suspended… (CVE-2026-89523)
Description
A vulnerability in the Linux kernel's mt76 wifi driver for the mt7925 device was resolved. The issue involved pending work (mlo_pm_work) that could run after the device was reset, suspended, or unregistered, potentially accessing freed memory or sending commands when firmware was unavailable. The fix adds cancellation of this pending work in all relevant teardown and suspend paths to prevent invalid device state access.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel mt76 driver for the mt7925 wifi device had a vulnerability where pending mlo_pm_work could execute after device reset, suspend, or unregistration. This could lead to accessing vif/bss data that may have been freed or sending MCU commands when firmware was not available. The patch ensures cancel_delayed_work_sync(&dev->mlo_pm_work) is called in all relevant teardown and suspend functions, preventing the work from running in invalid device states.
Potential Impact
If exploited, the vulnerability could cause use-after-free conditions or invalid firmware command transmissions, potentially leading to kernel instability or crashes. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix has been implemented in the Linux kernel by adding cancel_delayed_work_sync calls in all relevant device teardown and suspend paths. Users should update to a kernel version that includes this patch. No additional mitigation is required beyond applying the official fix.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-2cmm-rm3g-hc7x
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-89523"]
Threat ID: 6aa4a01655bf5e2cf5a866e3
Added to database: 09/12/2026, 00:43:02 UTC
Last enriched: 09/12/2026, 01:11:42 UTC
Last updated: 09/12/2026, 01:11:42 UTC
Views: 2
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