SB20260406121 - Out-of-bounds read in Linux kernel netfilter
Published: April 6, 2026
Security Bulletin ID
SB20260406121
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-31407)
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in the sctp and ctnetlink netlink attribute handling when processing crafted netlink attributes. A remote attacker can send specially crafted netlink messages to disclose sensitive information.
The issue is caused by missing validation of user-supplied netlink attribute values before they are used by the kernel.
Remediation
Install update from vendor's website.