In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix infinite loop in layout state revocation find_one_sb_stid() skips… (CVE-2026-64519)
A vulnerability in the Linux kernel's NFS server (NFSD) component caused an infinite loop during layout state revocation. The function find_one_sb_stid() skips certain state IDs based on status, but the relevant case in nfsd4_revoke_states() did not set this status before calling nfsd4_close_layout(), resulting in a retry loop that repeatedly processes the same state ID and causes the revoker to hang indefinitely.
AI Analysis
Technical Summary
The Linux kernel NFSD vulnerability (CVE-2026-64519) involves an infinite loop triggered during layout state revocation. Specifically, find_one_sb_stid() skips state IDs with a non-zero status, but the SC_TYPE_LAYOUT case in nfsd4_revoke_states() fails to set this status before invoking nfsd4_close_layout(). Consequently, the retry loop repeatedly encounters the same layout state ID, causing the revoker to hang indefinitely. This issue has been resolved in the Linux kernel.
Potential Impact
This vulnerability can cause the NFS server's layout state revocation process to hang indefinitely, potentially leading to denial of service conditions affecting NFS clients relying on layout state management. There is no indication of code execution or privilege escalation from the provided data.
Mitigation Recommendations
A fix for this vulnerability has been implemented in the Linux kernel. Users should apply the official kernel updates that include this resolution. Patch status is not explicitly confirmed in the provided data; therefore, check the vendor or Linux kernel advisory for the current remediation guidance.
In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix infinite loop in layout state revocation find_one_sb_stid() skips… (CVE-2026-64519)
Description
A vulnerability in the Linux kernel's NFS server (NFSD) component caused an infinite loop during layout state revocation. The function find_one_sb_stid() skips certain state IDs based on status, but the relevant case in nfsd4_revoke_states() did not set this status before calling nfsd4_close_layout(), resulting in a retry loop that repeatedly processes the same state ID and causes the revoker to hang indefinitely.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel NFSD vulnerability (CVE-2026-64519) involves an infinite loop triggered during layout state revocation. Specifically, find_one_sb_stid() skips state IDs with a non-zero status, but the SC_TYPE_LAYOUT case in nfsd4_revoke_states() fails to set this status before invoking nfsd4_close_layout(). Consequently, the retry loop repeatedly encounters the same layout state ID, causing the revoker to hang indefinitely. This issue has been resolved in the Linux kernel.
Potential Impact
This vulnerability can cause the NFS server's layout state revocation process to hang indefinitely, potentially leading to denial of service conditions affecting NFS clients relying on layout state management. There is no indication of code execution or privilege escalation from the provided data.
Mitigation Recommendations
A fix for this vulnerability has been implemented in the Linux kernel. Users should apply the official kernel updates that include this resolution. Patch status is not explicitly confirmed in the provided data; therefore, check the vendor or Linux kernel advisory for the current remediation guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-gv69-m9qg-32px
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64519"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a6542059c2644c7f8081acf
Added to database: 07/25/2026, 23:08:53 UTC
Last enriched: 07/25/2026, 23:11:35 UTC
Last updated: 07/25/2026, 23:12:12 UTC
Views: 2
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