{"id":"CVE-2026-92154","state":"PUBLISHED","title":"F´: File size bounds bypass in Svc::FileUplink via unsigned integer overflow in DATA packet validation","description":"F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.2.0, Svc::FileUplink handleDataPacket offset and size validation is vulnerable because the component checks byteOffset plus dataSize with wrapping U32 arithmetic and then seeks to the large attacker-controlled offset before writing. When a file-uplink DATA packet supplies a byteOffset and dataSize whose unsigned sum wraps below the declared file size, data can be written beyond the declared upload size, causing file integrity loss and potentially large sparse-file growth or resource exhaustion. This issue is fixed in version 4.2.0.","publishedAt":"2026-10-14T17:17:20.331Z","updatedAt":"2026-10-15T18:55:39.170Z","severity":{"score":8.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["nasa fprime"],"affected":[{"vendor":"nasa","product":"fprime","versions":[{"version":"< 4.2.0","status":"affected"}]}],"references":["https://github.com/nasa/fprime/security/advisories/GHSA-wx8q-q5gx-f54p","https://github.com/nasa/fprime/pull/4919","https://github.com/nasa/fprime/commit/cacdd555456bd83ab395b521d56c0330470ea798"],"weaknesses":["CWE-190"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/92xxx/CVE-2026-92154.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-92154","state":"PUBLISHED","datePublished":"2026-10-14T17:17:20.331Z","dateUpdated":"2026-10-15T18:55:39.170Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-09-15T17:13:57.865Z"},"containers":{"cna":{"title":"F´: File size bounds bypass in Svc::FileUplink via unsigned integer overflow in DATA packet validation","descriptions":[{"lang":"en","value":"F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.2.0, Svc::FileUplink handleDataPacket offset and size validation is vulnerable because the component checks byteOffset plus dataSize with wrapping U32 arithmetic and then seeks to the large attacker-controlled offset before writing. When a file-uplink DATA packet supplies a byteOffset and dataSize whose unsigned sum wraps below the declared file size, data can be written beyond the declared upload size, causing file integrity loss and potentially large sparse-file growth or resource exhaustion. This issue is fixed in version 4.2.0."}],"affected":[{"vendor":"nasa","product":"fprime","versions":[{"version":"< 4.2.0","status":"affected"}]}],"references":[{"url":"https://github.com/nasa/fprime/security/advisories/GHSA-wx8q-q5gx-f54p","name":"https://github.com/nasa/fprime/security/advisories/GHSA-wx8q-q5gx-f54p","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/nasa/fprime/pull/4919","name":"https://github.com/nasa/fprime/pull/4919","tags":["x_refsource_MISC"]},{"url":"https://github.com/nasa/fprime/commit/cacdd555456bd83ab395b521d56c0330470ea798","name":"https://github.com/nasa/fprime/commit/cacdd555456bd83ab395b521d56c0330470ea798","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-190","lang":"en","description":"CWE-190: Integer Overflow or Wraparound","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-14T17:17:20.331Z"},"source":{"advisory":"GHSA-wx8q-q5gx-f54p","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/nasa/fprime/security/advisories/GHSA-wx8q-q5gx-f54p","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-15T18:54:50.578904Z","id":"CVE-2026-92154","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-15T18:55:39.170Z"}}]}}}