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    CVE-2026-40337

    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.

    Published:Apr 17, 2026
    Last Modified:Apr 20, 2026
    EPS:Apr 17, 2026
    EPSS Score:0.00004
    CVSS Score:5.1

    Affected Products

    Vendor
    Camelot-os
    Product
    Sentry-kernel

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-283 Unverified Ownership

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High