CVE-2022-50274

HighCVSS 7.8/10Last modified Aug 4, 2026

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.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

No affected versions have been published.

Timeline

Published
Sep 15, 2025
Last modified
Aug 4, 2026
NVD status
Modified

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CVE-2022-50274: High severity, CVSS 7.8 | Vulnix