Description (CNA)
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().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 8653d71ce3763aedcf3d2331f59beda3fecd79e4 before 13e9f5a91360952b9b5bbc2367fc29d4a4ff2824; affected 8653d71ce3763aedcf3d2331f59beda3fecd79e4 before 3d8b11255e632170f32f1925bfcaf96331f36317; affected 8653d71ce3763aedcf3d2331f59beda3fecd79e4 before 02ac76f27db23ef652358458c272d9d2d6f51167; affected 8653d71ce3763aedcf3d2331f59beda3fecd79e4 before 858576de6b2f5166b08dae803f0fd0766dcb3002; affected 8653d71ce3763aedcf3d2331f59beda3fecd79e4 before 7e07d3e4c389217d7d7171d80edf2e23ac70f1ea; affected 89019ab7a64fcdf98a2ba7799e5c6aff58d4a05d; affected 3635523e9b96213969693c320302d536774d8e9b; affected 5.4.291 before 5.5; affected 5.10.235 before 5.11 |
| Linux / Linux | affected 5.12; unaffected 0 before 5.12; unaffected 6.6.160 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.51 through 6.18.*; unaffected 7.2.5 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
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