SB2026072069 - Improper control of a resource through its lifetime in Linux kernel netfs
Published: July 20, 2026
Security Bulletin ID
SB2026072069
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
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-2026-64157)
CWE-ID: CWE-664 - Improper control of a resource through its lifetime
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause data corruption.
The vulnerability exists due to improper state update in netfs_invalidate_folio() when partially invalidating a streaming-write folio. A local user can trigger partial invalidation of cached dirty data to cause data corruption.
Remediation
Install update from vendor's website.