CVE-2026-98596
개요
A flaw was found in the Linux kernel's IPv6 networking subsystem. A race condition during network device unregistration can lead to improper reference counting of uncached routes. A local attacker could exploit this flaw to cause an internal resource leak, leading to memory exhaustion and a Denial of Service (DoS).
내용
This vulnerability is rated as Moderate because exploitation requires local access and precise timing during network interface unregistration, limiting the blast radius to denial of service through memory exhaustion without impacting confidentiality or integrity. A local attacker could trigger repeated device removals in an IPv6 environment to gradually leak kernel route references. Earlier distributions, including Red Hat Enterprise Linux 8 and 9, do not include the vulnerable networking code and are not affected.
CVSS (Common Vulnerability Scoring System) 점수 세부 사항
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).
다음의 CVSS 지표 및 점수는 예비 정보로 검토 대상입니다.
CVSS v3 점수 분석
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| 기본 점수 | 5.5 | N/A | N/A |
| 공격 벡터 | Local | N/A | N/A |
| 공격 복잡성 | Low | N/A | N/A |
| 필요한 권한 | Low | N/A | N/A |
| 사용자 상호 작용 | None | N/A | N/A |
| 범위 | Unchanged | N/A | N/A |
| 기밀성 | None | N/A | N/A |
| 무결성에 미치는 영향 | None | N/A | N/A |
| 가용성에 미치는 영향 | High | N/A | N/A |
벡터
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
취약점 이해 (CWE)
Availability
Technical Impact: DoS: Resource Consumption (Other); DoS: Resource Consumption (Memory); DoS: Resource Consumption (CPU)
An attacker that can influence the allocation of resources that are not properly released could deplete the available resource pool and prevent all other processes from accessing the same type of resource. Frequently-affected resources include memory, CPU, disk space, power or battery, etc.
