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In the Linux kernel, the following vulnerability has been resolved:
hwmon: (aspeed-g6-pwm-tach) Guard fan RPM calculation against divide-by-zero
Sashiko reports:
In the aspeed-g6-pwm-tacho driver, the aspeed_tach_val_to_rpm() function calculates the fan RPM using the tachometer value. However, it does not check if the tachometer value is zero before performing the division.
If the hardware reports a tachometer value of 0 (which can happen due to an extremely fast pulse, a stuck edge, or a hardware glitch), the calculated tach_div evaluates to 0. The subsequent call to do_div() with tach_div as the divisor triggers a divide-by-zero exception, leading to a kernel panic.
Check the divisor against zero to fix the problem.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Aug 16, 2026 | Aug 16, 2026 |
| Ubuntu | — | Upgrade linux-image-virtual-hwe-26.04Upgrade linux-image-oracle-64k-7.0Upgrade linux-image-azure-lts-26.04Upgrade linux-image-7.0.0-1008-gke-64kUpgrade linux-image-ibm-7.0Upgrade linux-image-oracle-64kUpgrade linux-image-7.0.0-1017-azureUpgrade linux-image-azure-fde-7.0Upgrade linux-image-ibmUpgrade linux-image-7.0.0-1014-gcp-64kUpgrade linux-image-azure-fdeUpgrade linux-image-oem-26.04Upgrade linux-image-7.0.0-1016-azure-fdeUpgrade linux-image-7.0.0-1013-oracleUpgrade linux-image-7.0.0-1008-gkeUpgrade linux-image-gke-64k-7.0Upgrade linux-image-7.0.0-1014-awsUpgrade linux-image-azureUpgrade linux-image-generic-64kUpgrade linux-image-gcp-7.0Upgrade linux-image-realtime-hwe-26.04Upgrade linux-image-genericUpgrade linux-image-7.0.0-38-genericUpgrade linux-image-gke-64kUpgrade linux-image-gcpUpgrade linux-image-oracle-7.0Upgrade linux-image-7.0.0-1015-ibmUpgrade linux-image-7.0.0-1015-oemUpgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-awsUpgrade linux-image-realtime-64kUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-virtualUpgrade linux-image-realtime-7.0Upgrade linux-image-generic-64k-7.0Upgrade linux-image-aws-7.0Upgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-38-generic-64kUpgrade linux-image-realtimeUpgrade linux-image-gke-hwe-26.04Upgrade linux-image-gkeUpgrade linux-image-realtime-64k-7.0Upgrade linux-image-oracleUpgrade linux-image-oem-7.0Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-7.0.0-1014-gcpUpgrade linux-image-7.0.0-38-realtime-64kUpgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-7.0.0-1013-oracle-64kUpgrade linux-image-virtual-7.0Upgrade linux-image-azure-fde-lts-26.04Upgrade linux-image-generic-hwe-26.04Upgrade linux-image-generic-7.0Upgrade linux-image-gcp-64k-7.0Upgrade linux-image-azure-7.0Upgrade linux-image-aws-64kUpgrade linux-image-gke-7.0Upgrade linux-image-oem-26.04aUpgrade linux-image-gcp-64kUpgrade linux-image-7.0.0-1014-aws-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-7.0.0-38-realtime | Oct 7, 2026 | Oct 6, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 27, 2026 | Aug 15, 2026 |
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