Description
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.
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/0fc044b2b5e2d05a1fa1fb0d7f270367a7855d79 Patch
- git.kernel.org/stable/c/219b44bf94203bd433aa91b7796475bf656348e5 Patch
- git.kernel.org/stable/c/2abd73433872194bccdf1432a0980e4ec5273c2a Patch
- git.kernel.org/stable/c/6d18b44bb44e1f4d97dfe0efe92ac0f0984739c2 Patch
- git.kernel.org/stable/c/88a6f8a72d167294c0931c7874941bf37a41b6dd Patch
- git.kernel.org/stable/c/9945d05d6693710574f354c5dbddc47f5101eb77 Patch
- git.kernel.org/stable/c/a2f0a08aa613176c9688c81d7b598a7779974991 Patch
- git.kernel.org/stable/c/ac521bbe3d00fa574e66a9361763f2b37725bc97 Patch
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 6 · as of 8 November 2026
- CWE
- CWE-416
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.