CVE-2025-21795
Published: Feb 27, 2025
Modified: May 23, 2026
Description
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected 67ef9e5fd737eab2495f2586df7e9ea30caa1b77 - < abed68027ea3ab893ac85cc46a00e2e64a324239affected 26540b8940a2e21582afa61a6fb8af87310bac72 - < efa8a261c575f816c7e79a87aeb3ef8a0bd6b221affected 66af25799940b26efd41ea6e648f75c41a48a2c2 - < 38d345f612503b850c2973e5a879f88e441b34d7affected 66af25799940b26efd41ea6e648f75c41a48a2c2 - < 23ad7797c74cd8f7f90617f1e59a8703e2b43908affected 66af25799940b26efd41ea6e648f75c41a48a2c2 - < cedfbb92cf97a6bff3d25633001d9c44442ee854+4 more versions |
Linux | Linux | affected 5.19unaffected 0 - < 5.19unaffected 5.10.235 - <= 5.10.*unaffected 5.15.179 - <= 5.15.*unaffected 6.1.129 - <= 6.1.*+4 more versions |
References
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