CVE-2026-89735usb: gadget: midi2: remove default configfs groups on teardown
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 8b645922b22303cec4628dbbbf6c8553d1cdec87 before 79dbedf40ad930f83839e564394dc5d1a54938c6; 8b645922b22303cec4628dbbbf6c8553d1cdec87 builds before 4beda67ee72e0c8df5b49951dd8b96f6adb25e02; from 8b645922b22303cec4628dbbbf6c8553d1cdec87 before a15c2acd3083461f91725760e59dff88b33c28f6; from 8b645922b22303cec4628dbbbf6c8553d1cdec87 before 9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700; 8b645922b22303cec4628dbbbf6c8553d1cdec87 builds before 0f6bffb5008f0cba9cad5ded2caccc64466a6e54 | CNA record |
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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.