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CVE-2025-21795

NFSD: fix hang in nfsd4_shutdown_callback PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 67ef9e5fd737eab2495f2586df7e9ea30caa1b77 before abed68027ea3ab893ac85cc46a00e2e64a324239; affected 26540b8940a2e21582afa61a6fb8af87310bac72 before efa8a261c575f816c7e79a87aeb3ef8a0bd6b221; affected 66af25799940b26efd41ea6e648f75c41a48a2c2 before 38d345f612503b850c2973e5a879f88e441b34d7; affected 66af25799940b26efd41ea6e648f75c41a48a2c2 before 23ad7797c74cd8f7f90617f1e59a8703e2b43908; affected 66af25799940b26efd41ea6e648f75c41a48a2c2 before cedfbb92cf97a6bff3d25633001d9c44442ee854; affected 66af25799940b26efd41ea6e648f75c41a48a2c2 before e88d2451cd42e025465d6b51fd716a47b0b3800d; affected 66af25799940b26efd41ea6e648f75c41a48a2c2 before 036ac2778f7b28885814c6fbc07e156ad1624d03; affected 5.10.220 before 5.10.235; affected 5.15.154 before 5.15.179
Linux / Linuxaffected 5.19; unaffected 0 before 5.19; unaffected 5.10.235 through 5.10.*; unaffected 5.15.179 through 5.15.*; unaffected 6.1.129 through 6.1.*; unaffected 6.6.79 through 6.6.*; unaffected 6.12.16 through 6.12.*; unaffected 6.13.4 through 6.13.*; unaffected 6.14 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CVE

No English description supplied.

siemens-SADP

No English description supplied.