CVE-2026-89669— Linux Kernel NFSD 复制通知状态ID初始化缺陷
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。
In the Linux kernel, the following vulnerability has been resolved: nfsd: initialize copy-notify stateid before publishing it nfsd4_copy_notify() finished initializing the cpntf state after nfs4_alloc_init_cpntf_state() had already linked it into the s2s_cp_st
影响版本矩阵 10
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 624322f1adc58acd0b69f77a6ddc764207e97241< e08a3dcaca0505f861e344a387f37f94d95dbdc2 |
affected |
624322f1adc58acd0b69f77a6ddc764207e97241< a4d7fedcaaf33e60a01e53eafca9041ef966212f |
affected | ||
624322f1adc58acd0b69f77a6ddc764207e97241< 4cdef96892f4fa6e70c405b6e8f2fd6972f3b64b |
affected | ||
624322f1adc58acd0b69f77a6ddc764207e97241< 129643893b79f8a3c6b72045f933fbab5ee424ca |
affected | ||
5.6 |
affected | ||
< 5.6 |
unaffected | ||
6.12.109≤ 6.12.* |
unaffected | ||
6.18.50≤ 6.18.* |
unaffected | ||
| … +2 条更多 | |||
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一、 漏洞 CVE-2026-89669 基础信息
漏洞信息
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Vulnerability Title
nfsd: initialize copy-notify stateid before publishing it
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
nfsd: initialize copy-notify stateid before publishing it
nfsd4_copy_notify() finished initializing the cpntf state after
nfs4_alloc_init_cpntf_state() had already linked it into the
s2s_cp_stateids IDR and the parent's sc_cp_list, with cs_count == 1 (the
membership reference) and none held for the caller. A racing
OFFLOAD_CANCEL (crafted cl_id == nn->s2s_cp_cl_id plus the guessable
so_id) could reach manage_cpntf_state() and free the entry, turning the
caller's subsequent cpn_cnr_stateid read and cp_p_stateid/cp_p_clid
writes into use-after-free. The owning clientid was also only recorded
after publication, so it could not gate an ownership check in that window.
Record cp_p_stateid and cp_p_clid inside nfs4_alloc_init_cpntf_state()
before nfs4_init_cp_state() publishes the entry, and return it with an
extra reference. The caller reads the stateid under that reference and
drops it with nfs4_put_cpntf_state(); on a late error the laundromat
reaps the entry.
来源: CVE Program / CVE List V5
CVSS Information
N/A
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-2026-89669 的公开POC
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CVE-2026-89669 其他参考 (4)
同批安全公告 · Linux · 2026-09-11 · 共 431 条
| CVE-2026-89491 | OCFS2集群心跳锁持有期间睡眠漏洞 | |
| CVE-2026-89477 | Linux内核 SCTP 重配置空指针引用漏洞 | |
| CVE-2026-89478 | sctp：移除的传输中丢弃数据块 | |
| CVE-2026-89479 | 内核SCTP模块关联删除后仍处理报文 | |
| CVE-2026-89480 | NVMe-TCP 读取字节数异常拒绝漏洞 | |
| CVE-2026-89482 | NVMe-TCP 数据长度误判漏洞 | |
| CVE-2026-89481 | NVMe/TCP 主机内存泄露漏洞 | |
| CVE-2026-89483 | Linux内核 NVMe驱动 逻辑错误 | |
| CVE-2026-89484 | Linux内核lockd 空指针解引用漏洞 | |
| CVE-2026-89485 | Linux lockd 锁释放时文件指针固定漏洞 | |
| CVE-2026-89486 | IPMI 驱动 _ipmi_destroy_user 释放后使用漏洞 | |
| CVE-2026-89487 | Open vSwitch 数据包丢弃逻辑缺陷 | |
| CVE-2026-89488 | Open vSwitch CT limit 释放后使用漏洞 | |
| CVE-2026-89489 | OpenRISC 内核 or1k_atomic 任意内存访问漏洞 | |
| CVE-2026-89500 | ring-buffer 缓冲区读取页修复 | |
| CVE-2026-89497 | Orangefs 调试掩码解析空格处理缺陷 | |
| CVE-2026-89498 | Orangefs 双重释放漏洞 | |
| CVE-2026-89499 | ring-buffer 页面交换失败时停止远程读取 | |
| CVE-2026-89496 | ocfs2文件系统COW完成处理缺陷 | |
| CVE-2026-89501 | ring-buffer 子缓冲区调整时未持锁漏洞 |
显示前 20 条，共 431 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-89669
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