CVE-2026-40337— Sentry kernel has incomplete ownership check for IRQ line manipulation
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I. Basic Information for CVE-2026-40337
Vulnerability Information
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Vulnerability Title
Sentry kernel has incomplete ownership check for IRQ line manipulation
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Sentry kernel is a high security level micro-kernel implementation made for high security embedded systems. A given task with one of the DEV or IO capability is able to interact with another task's IRQ line through the __sys_int_* syscall familly. Prior to version 0.4.7, this can lead to DoS and covert-channels between this task and the outer world. A patch is available in version 0.4.7. As a workaround, reduce tasks that have the DEV and IO capability to a single one.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未经验证的属主
Source: NVD (National Vulnerability Database)
Vulnerability Title
Sentry kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sentry kernel是camelot-os开源的一个用于高安全嵌入式系统的微内核实现。 Sentry kernel 0.4.7之前版本存在安全漏洞，该漏洞源于具有DEV或IO能力的任务可通过__sys_int_*系统调用族与另一任务的IRQ线交互，可能导致拒绝服务和隐蔽信道。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| camelot-os | sentry-kernel | < 0.4.7 | - |
II. Public POCs for CVE-2026-40337
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|---|
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IV. Related Vulnerabilities
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V. Comments for CVE-2026-40337
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