CVE-2026-46266

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the handling of RAW sockets using the IPPROTO RAW protocol. A malicious incoming ICMP packet can have its protocol field set to 255, allowing it to match a socket created with socket(AF INET, SOCK RAW, 255). This can lead to unauthorized changes in the Forwarding Next Hop Exception (FNHE) cache.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.