CVE-2026-98485
Description
A flaw was found in the Linux kernel's netfilter subsystem. This flaw allows a remote attacker to cause a Denial of Service (DoS) by sending specially crafted IPv6 packets to an affected system. The issue occurs when an IPv6 routing header match rule is configured with zero addresses, causing the packet inspection loop to bypass its termination condition. Consequently, processing matching packets triggers an out-of-bounds memory read, leading to a kernel crash.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.9 | N/A | 7.1 |
| Attack Vector | Network | N/A | Local |
| Attack Complexity | High | N/A | Low |
| Privileges Required | None | N/A | Low |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | High |
| Integrity Impact | None | N/A | None |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
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