CVE-2026-31404 Details
Description
Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
A vulnerability in the Linux kernel's NFS server (NFSD) has been addressed, which involved improper management of export references. The issue arose because the export cleanup process was not correctly synchronized with the RCU (Read-Copy-Update) grace period. This mismanagement allowed for concurrent access to freed resources, leading to a NULL pointer dereference. The vulnerability was caused by the immediate release of export references before the RCU grace period, enabling RCU readers to access invalidated data. The issue has been fixed by deferring the cleanup process until after the RCU grace period, ensuring that all references are properly managed and reducing the risk of concurrent access to freed resources.
The vulnerability has been fixed in the Linux kernel. Users should upgrade to the latest version where this issue has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No CVSS 3.x data is available for this CVE.
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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No references are available for this CVE.
Weakness Enumeration
No weakness enumeration is available for this CVE.
Affected Products
No affected product data is available for this CVE.
Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 11, 2026 | CVE Rejected | kernel.org |
| Aug 11, 2026 | CVE Modified | kernel.org |
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 20, 2026 | Initial Analysis | [email protected] |
| Apr 27, 2026 | CVE Modified | kernel.org |
| Apr 3, 2026 | New CVE Received | kernel.org |