CVE-2026-23409— Linux kernel 安全漏洞
可能的 ATT&CK 技术 1AI
T1190 · Exploit Public-Facing Application影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3< ff7c73744fafe944ed9a7b2b7cf6c8d5557a3d84 | affected |
031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3< 1439150cd3c411228b387ab5efca92199d2a659a | affected | ||
031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3< 0fab44285445e9012674396d5c1236a67da518e0 | affected | ||
031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3< f90e3ecd9e1ed69f1a370f866ceed1f104f3ab4a | affected | ||
031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3< 34fc60b125ed1d4eb002c76b0664bf0619492167 | affected | ||
031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3< 623a9d211bbbb031bb1cbdb38b23487648167f8a | affected | ||
031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3< 1ff4857fac56ac5a90ee63b24db05fa5e91a45aa | affected | ||
031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3< 39440b137546a3aa383cfdabc605fb73811b6093 | affected | ||
| … +10 条更多 | |||
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一、 漏洞 CVE-2026-23409 基础信息
漏洞信息
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Vulnerability Title
apparmor: fix differential encoding verification
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: apparmor: fix differential encoding verification Differential encoding allows loops to be created if it is abused. To prevent this the unpack should verify that a diff-encode chain terminates. Unfortunately the differential encode verification had two bugs. 1. it conflated states that had gone through check and already been marked, with states that were currently being checked and marked. This means that loops in the current chain being verified are treated as a chain that has already been verified. 2. the order bailout on already checked states compared current chain check iterators j,k instead of using the outer loop iterator i. Meaning a step backwards in states in the current chain verification was being mistaken for moving to an already verified state. Move to a double mark scheme where already verified states get a different mark, than the current chain being kept. This enables us to also drop the backwards verification check that was the cause of the second error as any already verified state is already marked.
来源: 美国国家漏洞数据库 NVD
CVSS Information
N/A
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
N/A
来源: 美国国家漏洞数据库 NVD
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于差分编码验证存在缺陷，可能导致循环创建。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2026-23409 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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同批安全公告 · Linux · 2026-04-01 · 共 11 条
| CVE-2026-23411 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23410 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23408 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23407 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23406 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23405 | Linux kernel 安全漏洞 | |
| CVE-2026-23404 | Linux kernel 安全漏洞 | |
| CVE-2026-23403 | Linux kernel 安全漏洞 | |
| CVE-2026-23402 | Linux kernel 安全漏洞 | |
| CVE-2026-23401 | Linux kernel 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-23409
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