nfsd

About this tag
The nfsd tag on WindowsForum.com covers security vulnerabilities and patches affecting the Linux NFS daemon (nfsd), which is the kernel-based NFS server component. Recent discussions focus on CVEs such as CVE-2026-22980, which addresses a use-after-free race condition during the NFSv4 grace period end, and CVE-2025-40324, which fixes a tracepoint crash in nfsd4_read_release. Another thread covers CVE-2025-40087, which adds a missing proc_layoutcommit handler for FlexFiles pNFS layouts to prevent crashes. These threads provide technical details on the bugs, their impact on system stability and availability, and the kernel patches that resolve them. The content is aimed at Linux system administrators and IT professionals managing NFS servers.

  1. CVE-2026-22980 Linux NFSd End Grace Race Fixed: Prevent Use After Free

    The Linux kernel received a targeted fix for a subtle but potentially disruptive race condition in the NFS daemon (nfsd) that could lead to memory being accessed after it was freed. Tracked as CVE-2026-22980, the issue centers on handling of the NFSv4 grace period end — specifically the...

  2. CVE-2025-40324: NFSd Tracepoint Crash and Patch Guide

    A harmless-looking tracehook in the NFS server (nfsd) could crash a system: CVE-2025-40324 patches a fault in nfsd4_read_release that causes the trace_nfsd_read_done tracepoint to crash during a specific pynfs read.testNoFh unit test when kernel tracing is enabled, turning a test scenario into...

  3. CVE-2025-40087 Linux NFSD Patch for FlexFiles pNFS and Azure Linux Attestation

    The Linux kernel patch tracked as CVE-2025-40087 fixes an NFSD (NFS server) edge case — adding a missing proc_layoutcommit handler for the FlexFiles pNFS layout to avoid a crash when a pNFS client issues a LAYOUTCOMMIT for that layout — and Microsoft has publicly attested that Azure Linux...