In the Linux kernel, the following vulnerability has been resolved:

usb: gadget: midi2: remove default configfs groups on teardown

f_midi2_alloc_inst() creates default configfs child groups for the
default endpoint and default block using configfs_add_default_group(),
setting their internal refcount to 1.

However, during function teardown in f_midi2_free_inst() or EP cleanup
in f_midi2_ep_opts_release(), configfs_remove_default_groups() is
never called, therefore never dropping the refcount and leaking struct
f_midi2_ep_opts and f_midi2_block_opts.

Add the missing configfs_remove_default_groups() in the afformentioned
functions to free the structs properly.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
8b645922b22303cec4628dbbbf6c8553d1cdec87 affected < 4beda67ee72e0c8df5b49951dd8b96f6adb25e02
8b645922b22303cec4628dbbbf6c8553d1cdec87 affected < a15c2acd3083461f91725760e59dff88b33c28f6
8b645922b22303cec4628dbbbf6c8553d1cdec87 affected < 9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700
8b645922b22303cec4628dbbbf6c8553d1cdec87 affected < 0f6bffb5008f0cba9cad5ded2caccc64466a6e54
Linux Linux affected
Version Status Constraints
6.6 affected —
0 unaffected < 6.6
6.12.109 unaffected ≤ 6.12.*
6.18.50 unaffected ≤ 6.18.*
7.2.4 unaffected ≤ 7.2.*
7.3-rc1 unaffected ≤ *

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/0f6bffb5008f0cba9cad5ded2caccc64466a6e54 cve-icon cve-icon
https://git.kernel.org/stable/c/4beda67ee72e0c8df5b49951dd8b96f6adb25e02 cve-icon cve-icon
https://git.kernel.org/stable/c/9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700 cve-icon cve-icon
https://git.kernel.org/stable/c/a15c2acd3083461f91725760e59dff88b33c28f6 cve-icon cve-icon
History

Sat, 12 Sep 2026 08:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-401
CWE-772

Fri, 11 Sep 2026 23:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: usb: gadget: midi2: remove default configfs groups on teardown f_midi2_alloc_inst() creates default configfs child groups for the default endpoint and default block using configfs_add_default_group(), setting their internal refcount to 1. However, during function teardown in f_midi2_free_inst() or EP cleanup in f_midi2_ep_opts_release(), configfs_remove_default_groups() is never called, therefore never dropping the refcount and leaking struct f_midi2_ep_opts and f_midi2_block_opts. Add the missing configfs_remove_default_groups() in the afformentioned functions to free the structs properly.
Title usb: gadget: midi2: remove default configfs groups on teardown
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-11T19:46:43.899Z

Reserved: 2026-09-11T19:38:34.760Z

Link: CVE-2026-89735

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-11T20:20:03.967

Modified: 2026-09-11T20:20:03.967

Link: CVE-2026-89735

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-12T08:15:07Z

Weaknesses