Answer in brief
CVE-2026-89735 records a Unknown severity vulnerability in usb: gadget: midi2: remove default configfs groups on teardown. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=8b645922b22303cec4628dbbbf6c8553d1cdec87 <4beda67ee72e0c8df5b49951dd8b96f6adb25e02 || >=8b645922b22303cec4628dbbbf6c8553d1cdec87 <a15c2acd3083461f91725760e59dff88b33c28f6 || >=8b645922b22303cec4628dbbbf6c8553d1cdec87 <9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700 || >=8b645922b22303cec4628dbbbf6c8553d1cdec87 <0f6bffb5008f0cba9cad5ded2caccc64466a6e54 | 4beda67ee72e0c8df5b49951dd8b96f6adb25e02, a15c2acd3083461f91725760e59dff88b33c28f6, 9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700, 0f6bffb5008f0cba9cad5ded2caccc64466a6e54 |
| Linux/Linuxgeneric | 6.6 | Not reported |
| Linux/Linuxgeneric | >=8b645922b22303cec4628dbbbf6c8553d1cdec87 <79dbedf40ad930f83839e564394dc5d1a54938c6 || >=8b645922b22303cec4628dbbbf6c8553d1cdec87 <4beda67ee72e0c8df5b49951dd8b96f6adb25e02 || >=8b645922b22303cec4628dbbbf6c8553d1cdec87 <a15c2acd3083461f91725760e59dff88b33c28f6 || >=8b645922b22303cec4628dbbbf6c8553d1cdec87 <9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700 || >=8b645922b22303cec4628dbbbf6c8553d1cdec87 <0f6bffb5008f0cba9cad5ded2caccc64466a6e54 | 79dbedf40ad930f83839e564394dc5d1a54938c6, 4beda67ee72e0c8df5b49951dd8b96f6adb25e02, a15c2acd3083461f91725760e59dff88b33c28f6, 9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700, 0f6bffb5008f0cba9cad5ded2caccc64466a6e54 |
Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 11, 2026
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.
Quoted source text, attributed separately from HOL analysis.