🔴 《严重安全漏洞：CVE-2026-53221》

CVSS 评分: 严重（9.8）　　CVE ID: CVE-2026-53221

漏洞描述

In the Linux kernel, the following vulnerability has been resolved:

ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup()

In vti6_tnl_lookup(), when an exact match for a tunnel fails,
the code falls back to searching for wildcard tunnels:

  • Tunnels matching the packet's local address, with any remote address
    wildcard remote).

  • Tunnels matching the packet's remote address, with any local address
    (wildcard local).

However, vti6 stores all these different types of tunnels in the same
hash table (ip6n->tnls_r_l) prone to hash collisions.

The bug is that the fallback search loops in vti6_tnl_lookup() were
missing checks to ensure that the candidate tunnel actually has
a wildcard address.

字段 值
CVE ID CVE-2026-53221
CVSS 评分 9.8
严重程度 严重
发布时间 2026-06-25
状态 Received

数据来源: NVD | 获取时间: 2026-06-28 18:14