PT-2026-46029 · Linux · Linux Kernel

Yizhou Zhao

·

CVE-2026-46266

·

Published

2026-02-03

·

Updated

2026-07-17

CVSS v2.0

9.4

Critical

VectorAV:N/AC:L/Au:N/C:N/I:C/A:C
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.

Exploit

Found an issue in the description? Have something to add? Feel free to write us 👾
dbugs@ptsecurity.com

Weakness Enumeration

CWE-1287

Related Identifiers

BDU:2026-08902
CVE-2026-46266
SUSE-SU-2026:22521-1
SUSE-SU-2026:22522-1
SUSE-SU-2026:2799-1
SUSE-SU-2026:2800-1
SUSE-SU-2026:2839-1
SUSE-SU-2026:2840-1
SUSE-SU-2026:2841-1
SUSE-SU-2026:2914-1
SUSE-SU-2026:3044-1
SUSE-SU-2026:3089-1
USN-8490-1
USN-8490-2
USN-8491-1
USN-8492-1
USN-8492-2
USN-8492-3
USN-8492-4
USN-8492-5
USN-8497-1
USN-8498-1
USN-8499-1
USN-8508-1
USN-8545-1
USN-8546-1

Affected Products

Linux Kernel