SB20260816398 - Resource exhaustion in Linux kernel nfs

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Main Vulnerability Database SB20260816398

SB20260816398 - Resource exhaustion in Linux kernel nfs

Published: August 16, 2026

Security Bulletin ID SB20260816398
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Resource exhaustion (CVE-ID: CVE-2026-72132)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to incorrect resource accounting in NFS commit-list writeback accounting when handling unstable writes split into multiple sub-folio requests. A local user can trigger writes that are split into many small requests to cause a denial of service.

Exploitation requires NFS client write activity where a folio is split into multiple requests, such as with pNFS flexfiles striping or wsize-limited splitting.


Remediation

Install update from vendor's website.

References