In the Linux kernel, the following vulnerability has been resolved:
media: dvbdev: adopts refcnt to avoid UAF
dvb_unregister_device() is known that prone to use-after-free. That is, the cleanup from dvb_unregister_device() releases the dvb_device even if there are pointers stored in file->private_data still refer to it.
This patch adds a reference counter into struct dvb_device and delays its deallocation until no pointer refers to the object.
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 | Sep 17, 2025 | Sep 17, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade python3-perfUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade bpftoolUpgrade kernel-tools | Feb 3, 2026 | Feb 2, 2026 |
| Redhat_linux | — | No solution existsUpgrade kernel | Nov 14, 2025 | Sep 15, 2025 |
| Ubuntu | — | Upgrade linux-intel-iotg-5.15Upgrade linux-gcp-5.4Upgrade linux-intel-iot-realtimeUpgrade linux-azure-5.15Upgrade linux-gcp-4.15Upgrade linux-azure-4.15Upgrade linux-nvidiaUpgrade linux-oracleUpgrade linux-hwe-5.4Upgrade linux-raspi-5.4Upgrade linux-gkeopUpgrade linux-ibm-5.4Upgrade linux-iotUpgrade linux-hweUpgrade linux-kvmUpgrade linux-aws-fipsUpgrade linux-azure-5.4Upgrade linuxUpgrade linux-gcp-fipsUpgrade linux-azure-fipsUpgrade linux-gcp-5.15Upgrade linux-awsUpgrade linux-gcpUpgrade linux-ibmUpgrade linux-bluefieldUpgrade linux-riscv-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-nvidia-tegra-5.15Upgrade linux-gkeUpgrade linux-azure-fdeUpgrade linux-oracle-5.4Upgrade linux-hwe-5.15Upgrade linux-fipsUpgrade linux-lowlatency-hwe-5.15Upgrade linux-azureUpgrade linux-raspiUpgrade linux-oracle-5.15Upgrade linux-realtimeUpgrade linux-lowlatencyUpgrade linux-aws-5.15Upgrade linux-intel-iotgUpgrade linux-aws-hweUpgrade linux-aws-5.4 | Sep 19, 2025 | Sep 16, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 15, 2025 | Sep 15, 2025 |
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