CVE-2026-90021 | BDVDB-2026-375301 Detail
LinuxLinux
Description#
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().
Impact#
No impact statement in the source data.
Weaknesses#
No weakness recorded in the source data.
References#
- https://git.kernel.org/stable/c/c76e82b026a28c348e5d841922aa73db36eca1d3
- 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
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.