SB2026091872 - Improper input validation in Linux kernel time
Published: September 18, 2026
Security Bulletin ID
SB2026091872
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 input validation (CVE-ID: CVE-2026-93146)
CWE-ID: CWE-20 - Improper input validation
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 incorrect time calculations or unexpected behavior.
The vulnerability exists due to improper input validation in proc_timens_set_offset() when processing a time namespace offset with an invalid nanosecond field. A local user can provide a time offset containing an out-of-range nanosecond value to cause incorrect time calculations or unexpected behavior.
Remediation
Install update from vendor's website.