SB20260625142 - Improper input validation in Linux kernel bpf
Published: June 25, 2026
Security Bulletin ID
SB20260625142
CSH 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 vulnerability.
1) Improper input validation (CVE-ID: CVE-2026-53031)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper input validation in arena_alloc_pages() when processing a node_id value for page allocation. A local user can supply an invalid node_id to cause a denial of service.
The issue is in the Linux kernel BPF arena implementation.
Remediation
Install update from vendor's website.