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.
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.
Metrics
Affected Vendors & Products
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Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
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 |
|
|
MITRE
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2025-09-18T13:58:41.397Z
Reserved: 2025-09-17T14:53:06.999Z
Link: CVE-2022-50400
Vulnrichment
No data.
NVD
Status : Received
Published: 2025-09-18T14:15:39.240
Modified: 2025-09-18T14:15:39.240
Link: CVE-2022-50400
Redhat
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OpenCVE Enrichment
No data.