{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-15390", "assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6", "state": "PUBLISHED", "assignerShortName": "CERT-PL", "dateReserved": "2026-07-10T11:51:31.347Z", "datePublished": "2026-09-29T10:04:31.905Z", "dateUpdated": "2026-09-29T10:55:43.070Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6", "shortName": "CERT-PL", "dateUpdated": "2026-09-29T10:06:54.262Z" }, "title": "Out-of-bounds write in Das U-Boot", "datePublic": "2026-09-29T00:00:00.000Z", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-787", "description": "CWE-787 Out-of-bounds write", "type": "CWE" } ] }, { "descriptions": [ { "lang": "en", "cweId": "CWE-459", "description": "CWE-459 Incomplete cleanup", "type": "CWE" } ] } ], "affected": [ { "vendor": "DENX Software Engineering", "product": "Das U-Boot", "repo": "https://source.denx.de/u-boot/u-boot", "modules": [ "__net_defragment()" ], "programFiles": [ "net.c" ], "versions": [ { "status": "affected", "version": "2009.08", "lessThanOrEqual": "2026.07", "changes": [ { "at": "commit b1aec609bb5e0d08c25c888c91935287ab4ee5fa", "status": "unaffected" } ], "versionType": "date" } ], "defaultStatus": "unaffected" } ], "descriptions": [ { "lang": "en", "value": "Das U-Boot with CONFIG_IP_DEFRAG=y parameter fails to clear IP reassembly state after delivering a complete datagram. An attacker who can deliver fragmented IP traffic can execute arbitrary code by sending duplicated last-fragment IP packets.\n\n\nThis issue was fixed in commit b1aec609bb5e0d08c25c888c91935287ab4ee5fa in version 2026.07.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "Das U-Boot with CONFIG_IP_DEFRAG=y parameter fails to clear IP reassembly state after delivering a complete datagram. An attacker who can deliver fragmented IP traffic can execute arbitrary code by sending duplicated last-fragment IP packets.

This issue was fixed in commit b1aec609bb5e0d08c25c888c91935287ab4ee5fa in version 2026.07.
" } ] } ], "tags": [ "x_open-source" ], "references": [ { "url": "https://cert.pl/en/posts/2026/09/CVE-2026-15390", "tags": [ "third-party-advisory" ] }, { "url": "https://source.denx.de/u-boot/u-boot/-/commit/b1aec609bb5e0d08c25c888c91935287ab4ee5fa", "tags": [ "patch" ] } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "ADJACENT", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 9, "vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H" } } ], "credits": [ { "lang": "en", "value": "Mateusz Furdyna, Nokia", "type": "finder" } ], "source": { "discovery": "EXTERNAL" }, "x_generator": { "engine": "Vulnogram 1.0.3" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-09-29T10:53:14.845353Z", "id": "CVE-2026-15390", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-29T10:55:43.070Z" } } ] } }