CVE-2026-90110— inetpeer 随机化RB树节点比较
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
在 Linux 内核中，已修复以下漏洞： inetpeer：使用 SipHash 随机化红黑树节点比较逻辑 inetpeer 限流系统以前端 IP 地址作为确定性键值，将 peer 条目存储在一棵红黑树（Red-Black tree）中。由于树的查找过程使用标准的字典序比较（ ）来遍历红黑树，非路径对手（off-path adversary）可以预测树的精确拓扑结构以及在查找过程中遍历的节点序列（即 候选列表）。 通过将确定性的树遍历与激进的垃圾回收机制（当树的大小超过 时触发）相结合，攻击者可以有选择地强制驱逐特
影响版本矩阵 14
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | b145425f269a17ed344d737f746b844dfac60c82< b20e98f0bb668a59abaf7bcf85d75c073e90d352 |
affected |
b145425f269a17ed344d737f746b844dfac60c82< 5f127e3cc9647a8a70db12c65dbd0de473545380 |
affected | ||
b145425f269a17ed344d737f746b844dfac60c82< 199fcf285e498111e029137d088949bc6c26d578 |
affected | ||
b145425f269a17ed344d737f746b844dfac60c82< 857681f6835d5b0a7bc4a34a026baeaaf5215623 |
affected | ||
b145425f269a17ed344d737f746b844dfac60c82< 7109bb63667a53e4542ad845476f97d0c8b28a61 |
affected | ||
b145425f269a17ed344d737f746b844dfac60c82< 2ee66e9487172fcd189bc52a767c30dad7141c09 |
affected | ||
4.14 |
affected | ||
< 4.14 |
unaffected | ||
| … +6 条更多 | |||
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一、 漏洞 CVE-2026-90110 基础信息
漏洞信息
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Vulnerability Title
inetpeer: randomize RB-tree node comparison using SipHash
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
inetpeer: randomize RB-tree node comparison using SipHash
The inetpeer rate limiting system stores peer entries in a Red-Black tree
keyed deterministically on the remote IP address. Because tree lookups walk
the RB-tree using standard lexicographical comparisons (inetpeer_addr_cmp),
an off-path adversary can predict the exact topology of the tree and the
sequence of nodes traversed during lookups (the gc_stack candidate list).
By combining deterministic tree traversal with aggressive garbage collection
(triggered when tree size exceeds inet_peer_threshold), an attacker can
selectively force the eviction of targeted inet_peer nodes. When an evicted
node is subsequently re-created upon receiving a new packet, its rate-limiting
token bucket (rate_tokens, rate_last) is reset to full capacity. This creates
a side-channel primitive allowing off-path attackers to bypass IP-keyed ICMP
rate limits and infer open UDP ports (similar to SAD DNS style attacks).
Mitigate this by randomizing the RB-tree node comparison logic using SipHash
with a secret key (inetpeer_hash_key) initialized via net_get_random_once().
Nodes are ordered in the tree by SipHash(addr, key) rather than raw IP
addresses. Because the secret key is unknown to external entities, the tree
layout and lookup traversal paths are unpredictable to off-path adversaries,
breaking the deterministic eviction gadget.
Cache the computed 64-bit SipHash (hash) in struct inet_peer and compute the
target hash (dhash) once at the beginning of inet_getpeer() to avoid recomputing
SipHash at every step of the RB-tree walk.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-90110 的公开POC
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|---|
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CVE-2026-90110 补丁与修复 (6)
同批安全公告 · Linux · 2026-09-17 · 共 600 条
| CVE-2026-92489 | 9.8 CRITICAL | Linux内核 xfrm 双重释放漏洞 |
| CVE-2026-90151 | 9.8 CRITICAL | NFSv4客户端分配失败回调处理漏洞 |
| CVE-2026-90173 | 9.8 CRITICAL | SMB SmbDirect 释放完成队列漏洞 |
| CVE-2026-90104 | 9.8 CRITICAL | NFSv4.1 解码前未清空调用列表 |
| CVE-2026-90235 | 9.8 CRITICAL | 内核sunrpc xprtsock并发读取修复 |
| CVE-2026-90413 | 9.1 CRITICAL | IB/isert 登录PDU数据长度校验漏洞 |
| CVE-2026-90414 | 9.1 CRITICAL | IB/isert拒绝声明超出实际接收数据的PDU |
| CVE-2026-90230 | 9.1 CRITICAL | Linux内核Nvme-target堆越界读取漏洞 |
| CVE-2026-90379 | 8.8 HIGH | Linux 内核 mt76 驱动系统崩溃漏洞 |
| CVE-2026-90286 | 8.8 HIGH | AMDGPU GFX6 计算队列PFP使用漏洞 |
| CVE-2026-90381 | 8.8 HIGH | Linux内核mt76驱动无线信道切换漏洞 |
| CVE-2026-90256 | 8.8 HIGH | Linux Bluetooth L2CAP 远程代码执行漏洞 |
| CVE-2026-90255 | 8.8 HIGH | Linux内核 Bluetooth 漏洞 |
| CVE-2026-90380 | 8.8 HIGH | MT76驱动 mt792x 使用释放后内存漏洞 |
| CVE-2026-90357 | 8.8 HIGH | mt76驱动MT7915无线局域网远程拒绝服务漏洞 |
| CVE-2026-90240 | 8.8 HIGH | Linux内核 IOMMU 别名拆除时刷新缓存错误 |
| CVE-2026-90425 | 8.8 HIGH | Linux内核 5.x 内核漏洞 |
| CVE-2026-90371 | 8.8 HIGH | mt76 无线驱动 RXDMAD_C 竞态修复 |
| CVE-2026-93189 | 8.8 HIGH | Linux HID核心使用已释放内存漏洞 |
| CVE-2026-90329 | 8.8 HIGH | Linux 内核 HID 驱动探测清理同步漏洞 |
显示前 20 条，共 600 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-90110
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