In the Linux kernel, the following vulnerability has been resolved:
media: dvb-core: Fix double free in dvb_register_device()
In function dvb_register_device() -> dvb_register_media_device() -> dvb_create_media_entity(), dvb->entity is allocated and initialized. If the initialization fails, it frees the dvb->entity, and return an error code. The caller takes the error code and handles the error by calling dvb_media_device_free(), which unregisters the entity and frees the field again if it is not NULL. As dvb->entity may not NULLed in dvb_create_media_entity() when the allocation of dvbdev->pad fails, a double free may occur. This may also cause an Use After free in media_device_unregister_entity().
Fix this by storing NULL to dvb->entity when it is freed.
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 | Oct 6, 2025 | Oct 6, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade bpftoolUpgrade kernel-tools-libsUpgrade python3-perf | Feb 3, 2026 | Feb 2, 2026 |
| Ubuntu | — | Upgrade linux-ibmUpgrade linux-azure-5.15Upgrade linux-oracleUpgrade linux-lowlatencyUpgrade linux-oracle-5.15Upgrade linux-iotUpgrade linuxUpgrade linux-xilinx-zynqmpUpgrade linux-gcp-fipsUpgrade linux-nvidiaUpgrade linux-aws-fipsUpgrade linux-hweUpgrade linux-azure-fipsUpgrade linux-gkeopUpgrade linux-aws-hweUpgrade linux-gcp-4.15Upgrade linux-ibm-5.4Upgrade linux-hwe-5.4Upgrade linux-intel-iot-realtimeUpgrade linux-gcp-5.4Upgrade linux-nvidia-tegra-5.15Upgrade linux-raspiUpgrade linux-aws-5.15Upgrade linux-fipsUpgrade linux-azure-fdeUpgrade linux-riscv-5.15Upgrade linux-intel-iotgUpgrade linux-raspi-5.4Upgrade linux-awsUpgrade linux-gcp-5.15Upgrade linux-aws-5.4Upgrade linux-azure-5.4Upgrade linux-bluefieldUpgrade linux-kvmUpgrade linux-azure-4.15Upgrade linux-azureUpgrade linux-intel-iotg-5.15Upgrade linux-oracle-5.4Upgrade linux-gcpUpgrade linux-hwe-5.15Upgrade linux-gkeUpgrade linux-realtimeUpgrade linux-lowlatency-hwe-5.15 | Oct 10, 2025 | Oct 4, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 15, 2025 | Oct 4, 2025 |
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