Security Advisory

CVE-2026-40337

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-04-17 23:51:09

Last updated 2026-04-20 16:13:48

Assigner GitHub_M

State PUBLISHED

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 tasks 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.

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