CVE-2026-40337: CWE-283: Unverified Ownership in camelot-os sentry-kernel
CVE-2026-40337 is a medium severity vulnerability in the camelot-os sentry-kernel prior to version 0. 4. 7. It involves unverified ownership in the __sys_int_* syscall family, allowing tasks with DEV or IO capabilities to interact improperly with other tasks' IRQ lines. This can lead to denial of service (DoS) and covert channels between the affected task and external entities. A patch addressing this issue is available in version 0. 4. 7. As a temporary mitigation, reducing the number of tasks with DEV and IO capabilities to one is recommended.
AI Analysis
Technical Summary
The Sentry kernel, designed for high-security embedded systems, contains a vulnerability (CWE-283) where tasks possessing DEV or IO capabilities can interact with IRQ lines of other tasks via the __sys_int_* syscall family. This lack of ownership verification prior to version 0.4.7 enables potential denial of service and covert communication channels. The vulnerability affects versions earlier than 0.4.7, and a patch is available in version 0.4.7. A workaround involves limiting tasks with DEV and IO capabilities to a single task to reduce risk.
Potential Impact
Exploitation of this vulnerability can result in denial of service conditions and covert channels, potentially allowing unauthorized communication between tasks and the outside world. The confidentiality impact is low, integrity impact is none, and availability impact is high as per the CVSS vector. No known exploits are reported in the wild.
Mitigation Recommendations
A patch fixing this vulnerability is available in camelot-os sentry-kernel version 0.4.7 and should be applied. As a temporary workaround before patching, reduce the number of tasks with DEV and IO capabilities to a single task to limit exposure. No other vendor advisories or official remediation levels are provided, so check the vendor's official resources for updates.
CVE-2026-40337: CWE-283: Unverified Ownership in camelot-os sentry-kernel
Description
CVE-2026-40337 is a medium severity vulnerability in the camelot-os sentry-kernel prior to version 0. 4. 7. It involves unverified ownership in the __sys_int_* syscall family, allowing tasks with DEV or IO capabilities to interact improperly with other tasks' IRQ lines. This can lead to denial of service (DoS) and covert channels between the affected task and external entities. A patch addressing this issue is available in version 0. 4. 7. As a temporary mitigation, reducing the number of tasks with DEV and IO capabilities to one is recommended.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Sentry kernel, designed for high-security embedded systems, contains a vulnerability (CWE-283) where tasks possessing DEV or IO capabilities can interact with IRQ lines of other tasks via the __sys_int_* syscall family. This lack of ownership verification prior to version 0.4.7 enables potential denial of service and covert communication channels. The vulnerability affects versions earlier than 0.4.7, and a patch is available in version 0.4.7. A workaround involves limiting tasks with DEV and IO capabilities to a single task to reduce risk.
Potential Impact
Exploitation of this vulnerability can result in denial of service conditions and covert channels, potentially allowing unauthorized communication between tasks and the outside world. The confidentiality impact is low, integrity impact is none, and availability impact is high as per the CVSS vector. No known exploits are reported in the wild.
Mitigation Recommendations
A patch fixing this vulnerability is available in camelot-os sentry-kernel version 0.4.7 and should be applied. As a temporary workaround before patching, reduce the number of tasks with DEV and IO capabilities to a single task to limit exposure. No other vendor advisories or official remediation levels are provided, so check the vendor's official resources for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-10T22:50:01.358Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e389f6bdfbbecc59765143
Added to database: 4/18/2026, 1:41:10 PM
Last enriched: 4/18/2026, 1:53:27 PM
Last updated: 4/18/2026, 4:07:07 PM
Views: 5
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