High · published February 27, 2025
In the Linux kernel, the following vulnerability has been resolved:
NFSD: fix hang in nfsd4_shutdown_callback
If nfs4_client is in courtesy state then there is no point to send
the callback. This causes nfsd4_shutdown_callback to hang since
cl_cb_inflight is not 0. This hang lasts about 15 minutes until TCP
notifies NFSD that the connection was dropped.
This patch modifies nfsd4_run_cb_work to skip the RPC call if
nfs4_client is in courtesy state.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 5.10.220, < 5.10.235 | 5.10.235 |
| linux/linux_kernel | ≥ 5.15.154, < 5.15.179 | 5.15.179 |
| linux/linux_kernel | ≥ 5.19, < 6.1.129 | 6.1.129 |
| linux/linux_kernel | ≥ 6.2, < 6.6.79 | 6.6.79 |
| linux/linux_kernel | ≥ 6.7, < 6.12.16 | 6.12.16 |
| linux/linux_kernel | ≥ 6.13, < 6.13.4 | 6.13.4 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |