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In the Linux kernel, the following vulnerability has been resolved:
mmc: sdhci-esdhc-imx: disable irq during suspend to fix unhandled interrupt
When using WIFI out-of-band wakeup, an "irq xxx: nobody cared" warning occurs. This happens because the usdhc interrupt is not disabled during system suspend when device_may_wakeup() returns false.
The sequence of events leading to this issue: 1. System enters suspend without disabling usdhc interrupt (because device_may_wakeup() returns false for usdhc device) 2. WIFI out-of-band wakeup triggers system resume via GPIO interrupt 3. WIFI sends a Card interrupt before usdhc has fully resumed 4. usdhc is still in runtime suspend state and cannot handle the interrupt properly 5. The unhandled interrupt triggers "nobody cared" warning
Fix this by unconditionally disabling the usdhc interrupt during suspend and re-enabling it during resume, regardless of the wakeup capability. This ensures no interrupts are processed during the suspend/resume transition.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Ubuntu | — | Upgrade linux-image-oracleUpgrade linux-image-oracle-7.0Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-7.0.0-1008-gkeUpgrade linux-image-virtualUpgrade linux-image-7.0.0-1017-azureUpgrade linux-image-azure-lts-26.04Upgrade linux-image-7.0.0-1014-gcp-64kUpgrade linux-image-gke-hwe-26.04Upgrade linux-image-virtual-7.0Upgrade linux-image-ibm-7.0Upgrade linux-image-virtual-hwe-26.04Upgrade linux-image-genericUpgrade linux-image-gcp-7.0Upgrade linux-image-oracle-64k-7.0Upgrade linux-image-7.0.0-1013-oracleUpgrade linux-image-7.0.0-1013-oracle-64kUpgrade linux-image-generic-64kUpgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-1014-aws-64kUpgrade linux-image-7.0.0-38-realtimeUpgrade linux-image-azure-fde-7.0Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-azure-fde-lts-26.04Upgrade linux-image-7.0.0-1015-ibmUpgrade linux-image-azure-fdeUpgrade linux-image-ibmUpgrade linux-image-realtime-7.0Upgrade linux-image-7.0.0-38-realtime-64kUpgrade linux-image-7.0.0-1016-azure-fdeUpgrade linux-image-aws-7.0Upgrade linux-image-generic-7.0Upgrade linux-image-7.0.0-38-genericUpgrade linux-image-gcpUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-azureUpgrade linux-image-gke-7.0Upgrade linux-image-7.0.0-1015-oemUpgrade linux-image-generic-64k-7.0Upgrade linux-image-aws-64kUpgrade linux-image-oem-7.0Upgrade linux-image-realtime-hwe-26.04Upgrade linux-image-generic-hwe-26.04Upgrade linux-image-7.0.0-38-generic-64kUpgrade linux-image-realtime-64kUpgrade linux-image-awsUpgrade linux-image-oem-26.04Upgrade linux-image-7.0.0-1008-gke-64kUpgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-gkeUpgrade linux-image-oem-26.04aUpgrade linux-image-gke-64kUpgrade linux-image-7.0.0-1014-gcpUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-7.0.0-1014-awsUpgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-realtime-64k-7.0Upgrade linux-image-realtimeUpgrade linux-image-gcp-64kUpgrade linux-image-azure-7.0Upgrade linux-image-oracle-64kUpgrade linux-image-gke-64k-7.0 | Oct 7, 2026 | Oct 6, 2026 |
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