Not yet scoredPublished Sep 16, 2026

CVE-2026-90021usb: gadget: f_midi: initialize work in f_midi_alloc()

Updated under an hour ago (Oct 28, 2026, 2:50 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_midi: initialize work in f_midi_alloc() f_midi_alloc initializes free_ref to 1 and it can only be incremented when a sound card is registered via f_midi_register_card(). f_midi_register_card() is only called in f_midi_bind() which actually performs INIT_WORK. If f_midi_bind() is never run, work is not initialized and the if condition in f_midi_free becomes true, this results in a warning later in __flush_work as work->func = 0. Fix this by moving INIT_WORK from f_midi_bind() to f_midi_alloc().

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: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	8653d71ce3763aedcf3d2331f59beda3fecd79e4 builds before 13e9f5a91360952b9b5bbc2367fc29d4a4ff2824; 8653d71ce3763aedcf3d2331f59beda3fecd79e4 builds before 3d8b11255e632170f32f1925bfcaf96331f36317; 8653d71ce3763aedcf3d2331f59beda3fecd79e4 builds before 02ac76f27db23ef652358458c272d9d2d6f51167; from 8653d71ce3763aedcf3d2331f59beda3fecd79e4 before 858576de6b2f5166b08dae803f0fd0766dcb3002; 8653d71ce3763aedcf3d2331f59beda3fecd79e4 builds before 7e07d3e4c389217d7d7171d80edf2e23ac70f1ea; 89019ab7a64fcdf98a2ba7799e5c6aff58d4a05d; 3635523e9b96213969693c320302d536774d8e9b; from 5.4.291 before 5.5; and 1 more ranges	CNA record

References

References

https://git.kernel.org/stable/c/13e9f5a91360952b9b5bbc2367fc29d4a4ff2824
https://git.kernel.org/stable/c/3d8b11255e632170f32f1925bfcaf96331f36317
https://git.kernel.org/stable/c/02ac76f27db23ef652358458c272d9d2d6f51167
https://git.kernel.org/stable/c/858576de6b2f5166b08dae803f0fd0766dcb3002
https://git.kernel.org/stable/c/7e07d3e4c389217d7d7171d80edf2e23ac70f1ea

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.