SB2026072732 - Improper control of a resource through its lifetime in Linux kernel nfsd
Published: July 27, 2026
Security Bulletin ID
SB2026072732
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-64519)
CWE-ID: CWE-664 - Improper control of a resource through its lifetime
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper state management in nfsd4_revoke_states() when revoking layout states. A remote user can trigger layout state revocation to cause a denial of service.
The issue can cause the revocation logic to loop indefinitely and hang the revoker.
Remediation
Install update from vendor's website.