CVE-2026-64066: netfs: Fix netfs_read_to_pagecache() to pause on subreq failure
In the Linux kernel, the following vulnerability has been resolved:
netfs: Fix netfsreadtopagecache() to pause on subreq failure
Fix netfsreadtopagecache() so that it pauses the generation of new subrequests if an already-issued subrequest fails.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Modify netfs_read_to_pagecache() to pause generating new subrequests when an already-issued subrequest fails.
Event History
Frequently Asked Questions
What does an attacker need to exploit this issue?
The CVSS vector indicates network access, low attack complexity, no privileges, and no user interaction are required.
What impact is assigned if exploitation succeeds?
Confidentiality, integrity, and availability impacts are each rated High. The CVSS vector indicates the scope is unchanged.
Is a fix available?
Yes. A patch is available, with three referenced stable-kernel commits: 884c4c4f35e577aba6a0593c80cbea9ca5e6e2b8, 0256e79ce42101ad036edd4205bccca621ea0927, and 8a8c0cfdf4658fc5b295b7fc87be56e0d76741f4.