In the Linux kernel, the following vulnerability has been resolved:
hwmon: (powerz) Fix use-after-free on USB disconnect
After powerz_disconnect() frees the URB and releases the mutex, a subsequent powerz_read() call can acquire the mutex and call powerz_read_data(), which dereferences the freed URB pointer.
Fix by: - Setting priv->urb to NULL in powerz_disconnect() so that powerz_read_data() can detect the disconnected state. - Adding a !priv->urb check at the start of powerz_read_data() to return -ENODEV on a disconnected device. - Moving usb_set_intfdata() before hwmon registration so the disconnect handler can always find the priv pointer.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1058-oracle-64kUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-oem-20.04dUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-virtualUpgrade linux-image-7.0.0-1007-oracle-64kUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-gcp-7.0Upgrade linux-image-fipsUpgrade linux-image-oem-20.04bUpgrade linux-image-oem-22.04Upgrade linux-image-gkeop-6.8Upgrade linux-image-nvidia-64k-7.0Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-azure-fipsUpgrade linux-image-virtual-7.0Upgrade linux-image-azure-fde-6.8Upgrade linux-image-azure-fde-7.0Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-nvidiaUpgrade linux-image-7.0.0-1007-oracleUpgrade linux-image-intel-iotgUpgrade linux-image-realtimeUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1030-nvidia-tegraUpgrade linux-image-7.0.0-1008-aws-64kUpgrade linux-image-6.8.0-1059-gkeUpgrade linux-image-azure-fips-6.8Upgrade linux-image-7.0.0-27-genericUpgrade linux-image-aws-64kUpgrade linux-image-realtime-64k-7.0Upgrade linux-image-oem-24.04aUpgrade linux-image-gkeUpgrade linux-image-oem-22.04aUpgrade linux-image-oem-20.04Upgrade linux-image-oem-24.04dUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-awsUpgrade linux-image-lowlatency-64kUpgrade linux-image-generic-lpaeUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-ibm-classicUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-6.8.1-1056-realtimeUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-7.0.0-1013-nvidia-64kUpgrade linux-image-genericUpgrade linux-image-6.8.0-1064-gcp-fipsUpgrade linux-image-realtime-hwe-26.04Upgrade linux-image-azure-lts-24.04Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-generic-6.8Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-7.0.0-1008-awsUpgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-fips-6.8Upgrade linux-image-6.8.0-1046-gkeopUpgrade linux-image-6.8.0-1064-gcp-64kUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-azure-6.8Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-oracle-7.0Upgrade linux-image-xilinxUpgrade linux-image-6.8.0-136-lowlatencyUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.8.0-136-genericUpgrade linux-image-raspi-7.0Upgrade linux-image-oracle-64kUpgrade linux-image-gcpUpgrade linux-image-lowlatencyUpgrade linux-image-gcp-6.8Upgrade linux-image-6.8.0-1059-nvidia-64kUpgrade linux-image-aws-64k-6.8Upgrade linux-image-oracleUpgrade linux-image-6.8.0-1061-awsUpgrade linux-image-azure-7.0Upgrade linux-image-generic-64k-7.0Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-7.0.0-1009-azure-fdeUpgrade linux-image-6.8.0-1061-raspiUpgrade linux-image-6.8.0-2050-raspi-realtimeUpgrade linux-image-6.8.0-1059-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1033-xilinxUpgrade linux-image-6.8.0-1059-nvidia-lowlatencyUpgrade linux-image-oem-22.04bUpgrade linux-image-ibm-6.8Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-oem-24.04Upgrade linux-image-ibmUpgrade linux-image-oem-24.04bUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-raspi-realtimeUpgrade linux-image-virtual-hwe-26.04Upgrade linux-image-virtual-6.8Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-xilinx-6.8Upgrade linux-image-realtime-64kUpgrade linux-image-oem-24.04cUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-gke-64kUpgrade linux-image-generic-64k-6.8Upgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-azureUpgrade linux-image-gcp-fipsUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-6.8.0-1061-aws-64kUpgrade linux-image-aws-fips-6.8Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-7.0.0-1007-gcp-64kUpgrade linux-image-realtime-7.0Upgrade linux-image-7.0.0-1014-raspi-realtimeUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-ibm-7.0Upgrade linux-image-6.8.0-1059-nvidiaUpgrade linux-image-raspi-6.8Upgrade linux-image-7.0.0-1010-azureUpgrade linux-image-6.8.0-136-lowlatency-64kUpgrade linux-image-aws-64k-7.0Upgrade linux-image-raspiUpgrade linux-image-laptop-23.10Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-6.8.0-1063-azureUpgrade linux-image-nvidia-6.8Upgrade linux-image-lowlatency-6.8Upgrade linux-image-gkeopUpgrade linux-image-azure-fdeUpgrade linux-image-6.8.0-136-generic-64kUpgrade linux-image-oem-22.04dUpgrade linux-image-oem-20.04cUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-aws-lts-24.04Upgrade linux-image-6.8.0-1061-aws-fipsUpgrade linux-image-gke-64k-6.8Upgrade linux-image-7.0.0-1014-raspiUpgrade linux-image-generic-7.0Upgrade linux-image-7.0.0-27-realtime-64kUpgrade linux-image-nvidia-tegraUpgrade linux-image-gke-6.8Upgrade linux-image-6.8.0-1061-ibmUpgrade linux-image-7.0.0-1013-nvidiaUpgrade linux-image-kvmUpgrade linux-image-6.8.0-1063-azure-fipsUpgrade linux-image-realtime-6.8.1Upgrade linux-image-oracle-6.8Upgrade linux-image-aws-7.0Upgrade linux-image-7.0.0-28-genericUpgrade linux-image-gcp-64kUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-7.0.0-1007-gcpUpgrade linux-image-nvidia-64kUpgrade linux-image-generic-64kUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-7.0.0-27-generic-64kUpgrade linux-image-6.8.0-136-fipsUpgrade linux-image-6.8.0-1062-azure-fdeUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-oem-22.04cUpgrade linux-image-7.0.0-27-realtimeUpgrade linux-image-6.8.0-1064-gcpUpgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-generic-hwe-26.04Upgrade linux-image-aws-fipsUpgrade linux-image-nvidia-7.0Upgrade linux-image-6.8.0-1059-gke-64kUpgrade linux-image-aws-6.8Upgrade linux-image-7.0.0-28-generic-64kUpgrade linux-image-7.0.0-1009-ibmUpgrade linux-image-6.8.0-1058-oracleUpgrade linux-image-6.8.0-1030-nvidia-tegra-rtUpgrade linux-image-xilinx-zynqmp | Jul 1, 2026 | Apr 24, 2026 |
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