{"api_version":"1","generated_at":"2026-09-12T10:43:14+00:00","cve":"CVE-2026-89735","urls":{"html":"https://cve.report/CVE-2026-89735","api":"https://cve.report/api/cve/CVE-2026-89735.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89735","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89735"},"summary":{"title":"usb: gadget: midi2: remove default configfs groups on teardown","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: midi2: remove default configfs groups on teardown\n\nf_midi2_alloc_inst() creates default configfs child groups for the\ndefault endpoint and default block using configfs_add_default_group(),\nsetting their internal refcount to 1.\n\nHowever, during function teardown in f_midi2_free_inst() or EP cleanup\nin f_midi2_ep_opts_release(), configfs_remove_default_groups() is\nnever called, therefore never dropping the refcount and leaking struct\nf_midi2_ep_opts and f_midi2_block_opts.\n\nAdd the missing configfs_remove_default_groups() in the afformentioned\nfunctions to free the structs properly.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:20:03","updated_at":"2026-09-11 20:20:03"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700","name":"https://git.kernel.org/stable/c/9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4beda67ee72e0c8df5b49951dd8b96f6adb25e02","name":"https://git.kernel.org/stable/c/4beda67ee72e0c8df5b49951dd8b96f6adb25e02","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a15c2acd3083461f91725760e59dff88b33c28f6","name":"https://git.kernel.org/stable/c/a15c2acd3083461f91725760e59dff88b33c28f6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0f6bffb5008f0cba9cad5ded2caccc64466a6e54","name":"https://git.kernel.org/stable/c/0f6bffb5008f0cba9cad5ded2caccc64466a6e54","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89735","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89735","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8b645922b22303cec4628dbbbf6c8553d1cdec87 4beda67ee72e0c8df5b49951dd8b96f6adb25e02 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8b645922b22303cec4628dbbbf6c8553d1cdec87 a15c2acd3083461f91725760e59dff88b33c28f6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8b645922b22303cec4628dbbbf6c8553d1cdec87 9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8b645922b22303cec4628dbbbf6c8553d1cdec87 0f6bffb5008f0cba9cad5ded2caccc64466a6e54 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.6","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.109 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.50 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/usb/gadget/function/f_midi2.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"4beda67ee72e0c8df5b49951dd8b96f6adb25e02","status":"affected","version":"8b645922b22303cec4628dbbbf6c8553d1cdec87","versionType":"git"},{"lessThan":"a15c2acd3083461f91725760e59dff88b33c28f6","status":"affected","version":"8b645922b22303cec4628dbbbf6c8553d1cdec87","versionType":"git"},{"lessThan":"9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700","status":"affected","version":"8b645922b22303cec4628dbbbf6c8553d1cdec87","versionType":"git"},{"lessThan":"0f6bffb5008f0cba9cad5ded2caccc64466a6e54","status":"affected","version":"8b645922b22303cec4628dbbbf6c8553d1cdec87","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/usb/gadget/function/f_midi2.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.6"},{"lessThan":"6.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.109","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.50","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.109","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.50","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: midi2: remove default configfs groups on teardown\n\nf_midi2_alloc_inst() creates default configfs child groups for the\ndefault endpoint and default block using configfs_add_default_group(),\nsetting their internal refcount to 1.\n\nHowever, during function teardown in f_midi2_free_inst() or EP cleanup\nin f_midi2_ep_opts_release(), configfs_remove_default_groups() is\nnever called, therefore never dropping the refcount and leaking struct\nf_midi2_ep_opts and f_midi2_block_opts.\n\nAdd the missing configfs_remove_default_groups() in the afformentioned\nfunctions to free the structs properly."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:46:43.899Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/4beda67ee72e0c8df5b49951dd8b96f6adb25e02"},{"url":"https://git.kernel.org/stable/c/a15c2acd3083461f91725760e59dff88b33c28f6"},{"url":"https://git.kernel.org/stable/c/9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700"},{"url":"https://git.kernel.org/stable/c/0f6bffb5008f0cba9cad5ded2caccc64466a6e54"}],"title":"usb: gadget: midi2: remove default configfs groups on teardown","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89735","datePublished":"2026-09-11T19:46:43.899Z","dateReserved":"2026-09-11T19:38:34.760Z","dateUpdated":"2026-09-11T19:46:43.899Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:20:03","lastModifiedDate":"2026-09-11 20:20:03","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89735","Ordinal":"1","Title":"usb: gadget: midi2: remove default configfs groups on teardown","CVE":"CVE-2026-89735","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89735","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: midi2: remove default configfs groups on teardown\n\nf_midi2_alloc_inst() creates default configfs child groups for the\ndefault endpoint and default block using configfs_add_default_group(),\nsetting their internal refcount to 1.\n\nHowever, during function teardown in f_midi2_free_inst() or EP cleanup\nin f_midi2_ep_opts_release(), configfs_remove_default_groups() is\nnever called, therefore never dropping the refcount and leaking struct\nf_midi2_ep_opts and f_midi2_block_opts.\n\nAdd the missing configfs_remove_default_groups() in the afformentioned\nfunctions to free the structs properly.","Type":"Description","Title":"usb: gadget: midi2: remove default configfs groups on teardown"}]}}}