In the Linux kernel, the following vulnerability has been resolved: ALSA: line6: Fix racy access to midibuf There can be concurrent accesses to line6 midibuf from both the URB completion callback and the rawmidi API access. This could be a cause of KMSAN warning triggered by syzkaller below (so put as reported-by here). This patch protects the midibuf call of the former code path with a spinlock for avoiding the possible races.
| Product | Vendor | Version |
|---|---|---|
| Linux | Linux | 12.3(14)YM9 |
| Linux | Linux | 12.3(14)YM6 |
| Linux | Linux | earlier than 8.0.0.139(C432) |
| Linux | Linux | < 62 |