CVE-2022-50274

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 v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0fc044b2b5e2d05a1fa1fb0d7f270367a7855d79	Patch
https://git.kernel.org/stable/c/219b44bf94203bd433aa91b7796475bf656348e5	Patch
https://git.kernel.org/stable/c/2abd73433872194bccdf1432a0980e4ec5273c2a	Patch
https://git.kernel.org/stable/c/6d18b44bb44e1f4d97dfe0efe92ac0f0984739c2	Patch
https://git.kernel.org/stable/c/88a6f8a72d167294c0931c7874941bf37a41b6dd	Patch
https://git.kernel.org/stable/c/9945d05d6693710574f354c5dbddc47f5101eb77	Patch
https://git.kernel.org/stable/c/a2f0a08aa613176c9688c81d7b598a7779974991	Patch
https://git.kernel.org/stable/c/ac521bbe3d00fa574e66a9361763f2b37725bc97	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2025-09-15 15:15

Updated : 2025-12-03 18:21

NVD link : CVE-2022-50274

Mitre link : CVE-2022-50274

CVE.ORG link : CVE-2022-50274

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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