{"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&nbsp;with CONFIG_IP_DEFRAG=y parameter fails to clear IP reassembly state after delivering a complete datagram. An attacker&nbsp;who can deliver fragmented IP traffic can&nbsp;execute arbitrary code by sending duplicated last-fragment IP packets.<div><div><br></div><div>This issue was fixed in commit b1aec609bb5e0d08c25c888c91935287ab4ee5fa&nbsp;in&nbsp;version 2026.07.</div></div>"}]}],"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"}}]}}