SB20260912182 - Race condition in Linux kernel notify inotify
Published: September 12, 2026
Security Bulletin ID
SB20260912182
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) Race condition (CVE-ID: CVE-2026-89595)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause filesystem monitoring events to be missed.
The vulnerability exists due to a race condition in cached fsnotify object mask recalculation when concurrently updating fanotify or inotify marks on the same connector. A local user can issue concurrent mark updates to cause filesystem monitoring events to be missed.
Remediation
Install update from vendor's website.