CVE-2026-40337 | camelot-os sentry-kernel up to 0.4.6 unverified ownership (GHSA-5hgv-rg2f-79pg)

VDB-358165 · CVE-2026-40337 · GHSA-5HGV-RG2F-79PG CAMELOT-OS SENTRY-KERNEL UP TO 0.4.6 UNVERIFIED OWNERSHIP HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.5 $0-$5k 2.29+ Summaryinfo A vulnerability has been found in camelot-os sentry-kernel up to 0.4.6 and classified as critical. Impacted is an unknown function. This manipulation causes unverified ownership. This vulnerability is registered as CVE-2026-40337. The attack needs to be launched locally. No exploit is available. The affected component should be upgraded. Detailsinfo A vulnerability classified as critical was found in camelot-os sentry-kernel up to 0.4.6. Affected by this vulnerability is an unknown part. The manipulation with an unknown input leads to a unverified ownership vulnerability. The CWE definition for the vulnerability is CWE-283. The product does not properly verify that a critical resource is owned by the proper entity. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is: 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. The advisory is shared at github.com. This vulnerability is known as CVE-2026-40337 since 04/11/2026. The exploitation appears to be easy. An attack has to be approached locally. The exploitation requires an enhanced level of successful authentication. Neither technical details nor an exploit are publicly available. Upgrading to version 0.4.7 eliminates this vulnerability. Applying the patch 150b7edd2c5b0da0a8baeed3135ddde613b08081 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. Productinfo Vendor camelot-os Name sentry-kernel Version 0.4.0 0.4.1 0.4.2 0.4.3 0.4.4 0.4.5 0.4.6 License open-source Website Product: https://github.com/camelot-os/sentry-kernel/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 4.6 VulDB Meta Temp Score: 4.5 VulDB Base Score: 4.2 VulDB Temp Score: 4.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 5.1 CNA Vector (GitHub_M): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Unverified ownership CWE: CWE-283 / CWE-282 / CWE-284 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: No Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: sentry-kernel 0.4.7 Patch: 150b7edd2c5b0da0a8baeed3135ddde613b08081 Timelineinfo 04/11/2026 CVE reserved 04/18/2026 +7 days Advisory disclosed 04/18/2026 +0 days VulDB entry created 04/18/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-5hgv-rg2f-79pg Status: Confirmed CVE: CVE-2026-40337 (🔒) GCVE (CVE): GCVE-0-2026-40337 GCVE (VulDB): GCVE-100-358165 Entryinfo Created: 04/18/2026 09:02 Changes: 04/18/2026 09:02 (66) Complete: 🔍 Cache ID: 99:AA9:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸