Review reviewCritical

CVE-2026-64066

Linux

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix netfs_read_to_pagecache() to pause on subreq failure Fix netfs_read_to_pagecache() so that it pauses the generation of new subrequests if an already-issued subrequest fails.

CVSS: 9.8
EPSS: -
CISA KEV: Not listed
Published: 2026.07.20

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability-

Technical severityCVSS 9.8

Vulnerability overview

Affected product and versions

Product: Linux
Affected versions: >= ee4cdf7ba857a894ad1650d6ab77669cbbfa329e < 884c4c4f35e577aba6a0593c80cbea9ca5e6e2b8, >= ee4cdf7ba857a894ad1650d6ab77669cbbfa329e < 0256e79ce42101ad036edd4205bccca621ea0927, >= ee4cdf7ba857a894ad1650d6ab77669cbbfa329e < 8a8c0cfdf4658fc5b295b7fc87be56e0d76741f4, >= 6.12
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Linux and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: Not available