CVE Database›Document archive›CVE-2026-64114

CVE-2026-64114

kernel: ipv4: raw: reject IP_HDRINCL packets with ihl < 5

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · July 19, 2026

Updated · October 27, 2026

Description

A flaw was found in the Linux kernel's handling of IPv4 raw sockets. An unprivileged attacker with CAP_NET_RAW capabilities can craft and inject a malformed IPv4 packet with an invalid Internet Header Length (IHL). This can lead to an out-of-bounds memory access when the packet is processed by certain kernel components, ultimately causing a kernel panic and a denial of service.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-20 · Improper Input Validation