Linux · Linux Kernel · 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.