CVE-2026-90021

CVE CVE-2026-90021EUVD EUVD-2026-80629Published 2026-09-16T10:33:25.000Z

What the advisory describes

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().

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 89019ab7a64fcdf98a2ba7799e5c6aff58d4a05d; patch: 6.12.110; 8653d71ce3763aedcf3d2331f59beda3fecd79e4 <3d8b11255e632170f32f1925bfcaf96331f36317; patch: 6.18.51; 8653d71ce3763aedcf3d2331f59beda3fecd79e4 <7e07d3e4c389217d7d7171d80edf2e23ac70f1ea; patch: 7.3-rc2; 5.4.291 <5.5; patch: 7.2.5; 8653d71ce3763aedcf3d2331f59beda3fecd79e4 <858576de6b2f5166b08dae803f0fd0766dcb3002; patch: 0; 5.12; 8653d71ce3763aedcf3d2331f59beda3fecd79e4 <02ac76f27db23ef652358458c272d9d2d6f51167; 3635523e9b96213969693c320302d536774d8e9b; 5.10.235 <5.11

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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