CVE-2026-64393— ksmbd 使用打开者凭据运行 set info 的漏洞
可能的 ATT&CK 技术 1AI
T1068 · Exploitation for Privilege Escalation影响版本矩阵 17
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 5cbabf3a71575cd31bc7785d92d4ab42338a654b | affected |
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< b35afd5cf8fab236ef21117e42ee45691d4ffa7b | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 0ce682867fd506f61f40c76bde7e4205bde34e87 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 20ee516a62989a8d505ee432f9e59525ea23984e | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 8cc9ec711f5255167247a9ab6a7179b787426ed7 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< b383bcad3d2fe634b26efbce53e22bbb5753a520 | affected | ||
< 6.1.178 | affected | ||
< 6.6.145 | affected | ||
| … +9 条更多 | |||
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一、 漏洞 CVE-2026-64393 基础信息
漏洞信息
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Vulnerability Title
ksmbd: run set info with opener credentials
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: run set info with opener credentials SMB2 SET_INFO handlers call path-based VFS helpers after checking the access mask granted to the SMB handle. Those helpers perform their owner, inode permission and LSM checks using the current ksmbd worker credentials. Run the complete SET_INFO dispatch with the credentials captured when the handle was opened. This also removes the separate security information credential setup and keeps all SET_INFO classes under one credential scope. Direct override_creds() is used because it can nest with the request credential overrides already used by rename and link helpers.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
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-2026-64393 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-64393 补丁与修复 (6)
同批安全公告 · Linux · 2026-07-25 · 共 274 条
| CVE-2026-64355 | 9.8 CRITICAL | BPF devmap 拒绝分帧帧漏洞 |
| CVE-2026-64410 | 9.8 CRITICAL | netfilter flowtable IPIP隧道硬件卸载不支持 |
| CVE-2026-64399 | 9.8 CRITICAL | ksmbd FSCTL_DUPLICATE_EXTENTS_TO_FILE权限检查漏洞 |
| CVE-2026-64397 | 9.8 CRITICAL | ksmbd QUERY_DIRECTORY请求未序列化 |
| CVE-2026-64391 | 9.8 CRITICAL | ksmbd ADS I/O漏洞：使用opener凭据 |
| CVE-2026-64387 | 9.8 CRITICAL | SMB客户端查询目录重放双重释放漏洞 |
| CVE-2026-64386 | 9.8 CRITICAL | SMB 客户端 query_info() 双重释放漏洞 |
| CVE-2026-64385 | 9.8 CRITICAL | smb客户端 SMB2_ioctl() 重放时的双重释放漏洞 |
| CVE-2026-64383 | 9.8 CRITICAL | smb客户端SMB2_flush()重放时双重释放漏洞 |
| CVE-2026-64384 | 9.8 CRITICAL | SMB客户端变更通知重放双释放漏洞 |
| CVE-2026-64268 | 9.8 CRITICAL | RDMA/siw: Read响应绑定RREAD长度 |
| CVE-2026-64439 | 9.8 CRITICAL | krb5 crypto 异步AEAE实现分配时过滤漏洞 |
| CVE-2026-64303 | 9.8 CRITICAL | fsl-lpspi驱动中TX准备失败时RX通道未终止 |
| CVE-2026-64523 | 9.8 CRITICAL | net/handshake：提交时持有长期文件引用 |
| CVE-2026-64459 | 9.8 CRITICAL | TCP: tcp_ao_destroy_sock 中恢复 RCU 宽限期的漏洞 |
| CVE-2026-64257 | 9.1 CRITICAL | SMB 客户端拒绝SMB2响应中重叠数据区 |
| CVE-2026-64392 | 9.1 CRITICAL | ksmbd 删除时关闭权限验证漏洞 |
| CVE-2026-64269 | 9.1 CRITICAL | RDMA/rtrs-srv 远程写入长度限制漏洞 |
| CVE-2026-64450 | 9.1 CRITICAL | Tipc 广播 Gap ACK 块越界读取漏洞 |
| CVE-2026-64319 | 9.1 CRITICAL | nvmet-auth 传输长度响应消息载荷边界验证漏洞 |
显示前 20 条，共 274 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-64393
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