In the Linux kernel, the following vulnerability has been resolved: staging: greybus: audio_helper: remove unused and wrong debugfs usage In the greybus audio_helper code, the debugfs file for the dapm has the potential to be removed and memory will be leaked. There is also the very real potential for this code to remove ALL debugfs entries from the system, and it seems like this is what will really happen if this code ever runs. This all is very wrong as the greybus audio driver did not create this debugfs file, the sound core did and controls the lifespan of it. So remove all of the debugfs logic from the audio_helper code as there's no way it could be correct. If this really is needed, it can come back with a fixup for the incorrect usage of the debugfs_lookup() call which is what caused this to be noticed at all.
History

Fri, 19 Sep 2025 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Fri, 19 Sep 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate


Thu, 18 Sep 2025 14:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: staging: greybus: audio_helper: remove unused and wrong debugfs usage In the greybus audio_helper code, the debugfs file for the dapm has the potential to be removed and memory will be leaked. There is also the very real potential for this code to remove ALL debugfs entries from the system, and it seems like this is what will really happen if this code ever runs. This all is very wrong as the greybus audio driver did not create this debugfs file, the sound core did and controls the lifespan of it. So remove all of the debugfs logic from the audio_helper code as there's no way it could be correct. If this really is needed, it can come back with a fixup for the incorrect usage of the debugfs_lookup() call which is what caused this to be noticed at all.
Title staging: greybus: audio_helper: remove unused and wrong debugfs usage
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-09-18T13:58:41.397Z

Updated: 2025-09-18T13:58:41.397Z

Reserved: 2025-09-17T14:53:06.999Z

Link: CVE-2022-50400

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-09-18T14:15:39.240

Modified: 2025-09-18T14:15:39.240

Link: CVE-2022-50400

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-09-18T00:00:00Z

Links: CVE-2022-50400 - Bugzilla