{"id":"CVE-2026-89735","revision":"b5a4b4600bff418aa4cbde710849a079","records":[{"revision":"b5a4b4600bff418aa4cbde710849a079","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89735","aliases":[],"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":0,"publishedAt":"2026-09-11T19:46:43.899+00:00","modifiedAt":"2026-10-19T08:51:48.488+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/usb/gadget/function/f_midi2.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"8b645922b22303cec4628dbbbf6c8553d1cdec87\",\n                            \"lessThan\": \"79dbedf40ad930f83839e564394dc5d1a54938c6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8b645922b22303cec4628dbbbf6c8553d1cdec87\",\n                            \"lessThan\": \"4beda67ee72e0c8df5b49951dd8b96f6adb25e02\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8b645922b22303cec4628dbbbf6c8553d1cdec87\",\n                            \"lessThan\": \"a15c2acd3083461f91725760e59dff88b33c28f6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8b645922b22303cec4628dbbbf6c8553d1cdec87\",\n                            \"lessThan\": \"9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8b645922b22303cec4628dbbbf6c8553d1cdec87\",\n                            \"lessThan\": \"0f6bffb5008f0cba9cad5ded2caccc64466a6e54\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/usb/gadget/function/f_midi2.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/79dbedf40ad930f83839e564394dc5d1a54938c6","https://git.kernel.org/stable/c/4beda67ee72e0c8df5b49951dd8b96f6adb25e02","https://git.kernel.org/stable/c/a15c2acd3083461f91725760e59dff88b33c28f6","https://git.kernel.org/stable/c/9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700","https://git.kernel.org/stable/c/0f6bffb5008f0cba9cad5ded2caccc64466a6e54"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89735","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89735","identifiers":["CVE-2026-89735"]},"retained":false,"historicalAffected":[]}],"coverage":[]}