In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix crash in nfsd4_read_release() When tracing is enabled, the… (CVE-2025-40324)
A vulnerability in the Linux kernel's NFSD component caused a crash in the nfsd4_read_release() function when tracing was enabled. Specifically, the trace_nfsd_read_done trace point crashes during the pynfs read.testNoFh test. This issue has been resolved.
AI Analysis
Technical Summary
The Linux kernel contained a vulnerability identified as CVE-2025-40324 affecting the NFSD subsystem. When kernel tracing was enabled, the trace_nfsd_read_done trace point triggered a crash in the nfsd4_read_release() function during specific NFSv4 operations (pynfs read.testNoFh test). This denial-of-service condition could be triggered remotely without privileges or user interaction. The vulnerability has been fixed in the Linux kernel.
Potential Impact
The vulnerability results in a denial-of-service (DoS) condition by crashing the kernel's NFSD component when tracing is enabled. It does not impact confidentiality or integrity but causes service disruption (availability impact). No known exploits are reported in the wild.
Mitigation Recommendations
A fix for this vulnerability has been implemented in the Linux kernel. Users should apply the official kernel updates that include this patch. Since no vendor advisory or patch links are provided here, verify with the Linux kernel official sources for the exact fixed versions and update accordingly.
In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix crash in nfsd4_read_release() When tracing is enabled, the… (CVE-2025-40324)
Description
A vulnerability in the Linux kernel's NFSD component caused a crash in the nfsd4_read_release() function when tracing was enabled. Specifically, the trace_nfsd_read_done trace point crashes during the pynfs read.testNoFh test. This issue has been resolved.
CVSS v3.1
Score 7.5high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel contained a vulnerability identified as CVE-2025-40324 affecting the NFSD subsystem. When kernel tracing was enabled, the trace_nfsd_read_done trace point triggered a crash in the nfsd4_read_release() function during specific NFSv4 operations (pynfs read.testNoFh test). This denial-of-service condition could be triggered remotely without privileges or user interaction. The vulnerability has been fixed in the Linux kernel.
Potential Impact
The vulnerability results in a denial-of-service (DoS) condition by crashing the kernel's NFSD component when tracing is enabled. It does not impact confidentiality or integrity but causes service disruption (availability impact). No known exploits are reported in the wild.
Mitigation Recommendations
A fix for this vulnerability has been implemented in the Linux kernel. Users should apply the official kernel updates that include this patch. Since no vendor advisory or patch links are provided here, verify with the Linux kernel official sources for the exact fixed versions and update accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-cfr4-frvg-x3c3
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2025-40324"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a6b72d49c2644c7f8478f09
Added to database: 07/30/2026, 15:50:44 UTC
Last enriched: 07/30/2026, 17:53:59 UTC
Last updated: 09/10/2026, 19:38:48 UTC
Views: 29
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