In the Linux kernel, the following vulnerability has been resolved:
power: supply: max77705: Free allocated workqueue and fix removal order
Use devm interface for allocating workqueue to fix two bugs at the same time:
1. Driver leaks the memory on remove(), because the workqueue is not destroyed.
2. Driver allocates workqueue and then registers interrupt handlers with devm interface. This means that probe error paths will not use a reversed order, but first destroy the workqueue and then, via devm release handlers, free the interrupt.
The interrupt handler schedules work on this exact workqueue, thus if interrupt is hit in this short time window - after destroying workqueue, but before devm() frees the interrupt - the schedulled work will lead to use of freed memory.
Change is not equivalent in the workqueue itself: use non-legacy API which does not set (__WQ_LEGACY | WQ_MEM_RECLAIM). The workqueue is used to update power supply (power_supply_changed()) status, thus there is no point to run it for memory reclaim. Note that dev_name() is not directly used in second argument to prevent possible unlikely parsing any "%" character in device name as format.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Ubuntu | — | Upgrade linux-image-7.0.0-1009-azure-fdeUpgrade linux-image-azure-7.0Upgrade linux-image-gke-64k-7.0Upgrade linux-image-ibm-7.0Upgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-nvidia-bos-64kUpgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-7.0.0-1009-awsUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-7.0.0-1008-oracleUpgrade linux-image-awsUpgrade linux-image-7.0.0-1011-oracleUpgrade linux-image-7.0.0-1016-nvidia-64kUpgrade linux-image-oem-26.04Upgrade linux-image-oem-24.04aUpgrade linux-image-7.0.0-2016-nvidia-bosUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-gcpUpgrade linux-image-nvidia-64kUpgrade linux-image-virtual-hwe-26.04Upgrade linux-image-nvidia-7.0Upgrade linux-image-ibmUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-gcp-7.0Upgrade linux-image-7.0.0-1015-raspi-realtimeUpgrade linux-image-raspi-realtimeUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-raspiUpgrade linux-image-oem-24.04bUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-nvidia-bosUpgrade linux-image-oem-7.0Upgrade linux-image-oem-24.04dUpgrade linux-image-7.0.0-1009-oemUpgrade linux-image-7.0.0-28-genericUpgrade linux-image-oracle-7.0Upgrade linux-image-azureUpgrade linux-image-gke-64kUpgrade linux-image-7.0.0-1008-oracle-64kUpgrade linux-image-azure-fde-7.0Upgrade linux-image-azure-fdeUpgrade linux-image-oem-24.04cUpgrade linux-image-oracle-64kUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-generic-64k-7.0Upgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-7.0.0-1015-raspiUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-7.0.0-1003-gke-64kUpgrade linux-image-raspi-7.0Upgrade linux-image-generic-7.0Upgrade linux-image-aws-64kUpgrade linux-image-7.0.0-1016-nvidiaUpgrade linux-image-7.0.0-1008-gcp-64kUpgrade linux-image-virtual-7.0Upgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-7.0.0-1010-ibmUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-7.0.0-2016-nvidia-bos-64kUpgrade linux-image-oracleUpgrade linux-image-realtime-64kUpgrade linux-image-gke-hwe-26.04Upgrade linux-image-gkeUpgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-generic-64kUpgrade linux-image-gcp-64kUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-generic-hwe-26.04Upgrade linux-image-7.0.0-1009-aws-64kUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-7.0.0-28-realtimeUpgrade linux-image-realtime-7.0Upgrade linux-image-realtime-64k-7.0Upgrade linux-image-nvidiaUpgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-1011-oracle-64kUpgrade linux-image-7.0.0-1008-gcpUpgrade linux-image-oem-26.04aUpgrade linux-image-oem-24.04Upgrade linux-image-genericUpgrade linux-image-gke-7.0Upgrade linux-image-realtime-hwe-26.04Upgrade linux-image-virtualUpgrade linux-image-7.0.0-28-realtime-64kUpgrade linux-image-7.0.0-28-generic-64kUpgrade linux-image-7.0.0-1003-gkeUpgrade linux-image-aws-7.0Upgrade linux-image-nvidia-bos-7.0Upgrade linux-image-7.0.0-1014-azureUpgrade linux-image-7.0.0-1010-azureUpgrade linux-image-realtime | Jul 20, 2026 | Jun 26, 2026 |
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