Vulnerability Database

299,690

Total vulnerabilities in the database

CVE-2025-21795

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.

  • Published: Feb 27, 2025
  • Updated: Nov 4, 2025
  • CVE: CVE-2025-21795
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.5
  • AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

No CWE or OWASP classifications available.

Software From Fixed in
linux / linux_kernel 5.10.220 5.10.235
linux / linux_kernel 5.15.154 5.15.179
linux / linux_kernel 5.19 6.1.129
linux / linux_kernel 6.2 6.6.79
linux / linux_kernel 6.7 6.12.16
linux / linux_kernel 6.13 6.13.4
linux / linux_kernel 6.14-rc1 6.14-rc1.x
linux / linux_kernel 6.14-rc2 6.14-rc2.x