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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-89735
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-11 20:20:03 UTC
Updated2026-09-11 20:20:03 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 8b645922b22303cec4628dbbbf6c8553d1cdec87 4beda67ee72e0c8df5b49951dd8b96f6adb25e02 git Not specified
CNA Linux Linux affected 8b645922b22303cec4628dbbbf6c8553d1cdec87 a15c2acd3083461f91725760e59dff88b33c28f6 git Not specified
CNA Linux Linux affected 8b645922b22303cec4628dbbbf6c8553d1cdec87 9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700 git Not specified
CNA Linux Linux affected 8b645922b22303cec4628dbbbf6c8553d1cdec87 0f6bffb5008f0cba9cad5ded2caccc64466a6e54 git Not specified
CNA Linux Linux affected 6.6 Not specified
CNA Linux Linux unaffected 6.6 semver Not specified
CNA Linux Linux unaffected 6.12.109 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.50 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.4 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4beda67ee72e0c8df5b49951dd8b96f6adb25e02 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a15c2acd3083461f91725760e59dff88b33c28f6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0f6bffb5008f0cba9cad5ded2caccc64466a6e54 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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