SB20260406122 - Improper input validation in Linux kernel netfilter
Published: April 6, 2026
Security Bulletin ID
SB20260406122
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) Improper input validation (CVE-ID: CVE-2026-31407)
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in the sctp netlink attribute handling when processing crafted netlink attributes. A remote attacker can supply an invalid CTA_PROTOINFO_SCTP_STATE value to cause a denial of service.
Remediation
Install update from vendor's website.