{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-5071", "assignerOrgId": "e2e69745-5e70-4e92-8431-deb5529a81ad", "state": "PUBLISHED", "assignerShortName": "zephyr", "dateReserved": "2026-03-27T23:41:28.910Z", "datePublished": "2026-05-30T07:15:56.417Z", "dateUpdated": "2026-10-15T22:10:26.359Z" }, "containers": { "cna": { "affected": [ { "defaultStatus": "unaffected", "packageName": "Zephyr", "product": "Zephyr", "repo": "https://github.com/zephyrproject-rtos/zephyr", "vendor": "zephyrproject-rtos", "versions": [ { "lessThan": "3.7.2", "status": "affected", "version": "*", "versionType": "git" }, { "lessThan": "4.2.2", "status": "affected", "version": "4.0.0", "versionType": "git" }, { "lessThan": "4.3.1", "status": "affected", "version": "4.3.0", "versionType": "git" } ] } ], "descriptions": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "can: Local Denial of Service via SocketCAN Send" } ], "value": "The SocketCAN implementation validates the length of a user-provided buffer containing a socketcan_frame object using only a NET_ASSERT statement in zcan_sendto_ctx() before dereferencing it in socketcan_to_can_frame(). In production builds where assertions are disabled, a userspace application that controls the length passed to a sendto syscall can supply an incomplete or truncated frame, causing socketcan_to_can_frame() to dereference fields beyond the end of the buffer. This results in an out-of-bounds read that can cause denial-of-service crashes or, because the parsed frame contents are transmitted on the network, leak adjacent memory." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H", "version": "3.1" }, "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ] } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-125", "description": "Out-of-bounds Read", "lang": "en", "type": "CWE" } ] } ], "references": [ { "url": "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c3w6-x7m3-3c58" } ], "source": { "discovery": "UNKNOWN" }, "title": "can: Local Denial of Service via SocketCAN Send", "x_generator": { "engine": "swg-tools/create-cve-info" }, "providerMetadata": { "orgId": "e2e69745-5e70-4e92-8431-deb5529a81ad", "shortName": "zephyr", "dateUpdated": "2026-10-15T22:10:26.359Z" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-06-01T13:51:23.839460Z", "id": "CVE-2026-5071", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-01T13:51:32.526Z" } } ] } }