SB20260325145 - Resource exhaustion in Linux kernel intel i40e driver
Published: March 25, 2026
Security Bulletin ID
SB20260325145
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Resource exhaustion (CVE-ID: CVE-2026-23313)
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource management in the i40e NAPI poll tracepoint when handling network packets. A local user can trigger the tracepoint to cause a preempt count leak, leading to a denial of service.
The issue arises from using get_cpu() without a corresponding put_cpu() in the tracepoint, which results in an increment of the preempt count that is never decremented.
Remediation
Install update from vendor's website.