fs/nfs/nfs4client.c in the Linux kernel before 5.13.4 has incorrect connection-setup ordering, which allows operators of remote NFSv4 servers to cause a denial of service (hanging of mounts) by arranging for those servers to be unreachable during trunking detection.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | - | 5.13.4 |
| debian / debian_linux | 9.0 | 9.0.x |
| debian / debian_linux | 11.0 | 11.0.x |