High · published April 22, 2022
In the Linux kernel before 5.17.3, fs/io_uring.c has a use-after-free due to a race condition in io_uring timeouts. This can be triggered by a local user who has no access to any user namespace; however, the race condition perhaps can only be exploited infrequently.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | < 5.10.111 | 5.10.111 |
| linux/linux_kernel | ≥ 5.11, < 5.15.34 | 5.15.34 |
| linux/linux_kernel | ≥ 5.16, < 5.16.20 | 5.16.20 |
| linux/linux_kernel | ≥ 5.17, < 5.17.3 | 5.17.3 |
| debian/debian_linux | all versions | — |