{"id":"CVE-2026-92157","state":"PUBLISHED","title":"F´: FileDownlink SendPartial integer overflow lets legal startOffset/length values reach a reachable assertion","description":"F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.3.0, Svc::FileDownlink SendPartial range validation is vulnerable because unchecked startOffset plus length arithmetic bypasses the range check and stores a wrapped m_endOffset that is inconsistent with m_byteOffset. When an existing source file is larger than a valid startOffset and a SendPartial command supplies a length whose U32 sum with that offset wraps below the file size, under standard F Prime assertion handling, the first data-packet transition reaches FW_ASSERT and aborts or resets the process, causing denial of service. This issue is fixed in version 4.3.0.","publishedAt":"2026-10-14T17:09:20.199Z","updatedAt":"2026-10-20T01:42:27.964Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["nasa fprime"],"affected":[{"vendor":"nasa","product":"fprime","versions":[{"version":"< 4.3.0","status":"affected"}]}],"references":["https://github.com/nasa/fprime/security/advisories/GHSA-hcmw-g425-8h9g","https://github.com/nasa/fprime/pull/5565","https://github.com/nasa/fprime/commit/33fe2a4fe3fd5ff1b14985669fbad09f070e9914","https://github.com/nasa/fprime/commit/95eeb5cfb44e5609eff0887f0e11e640cdacef6b","https://github.com/nasa/fprime/releases/tag/v4.3.0"],"weaknesses":["CWE-190","CWE-617"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/92xxx/CVE-2026-92157.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-92157","state":"PUBLISHED","datePublished":"2026-10-14T17:09:20.199Z","dateUpdated":"2026-10-20T01:42:27.964Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-09-15T17:13:57.865Z"},"containers":{"cna":{"title":"F´: FileDownlink SendPartial integer overflow lets legal startOffset/length values reach a reachable assertion","descriptions":[{"lang":"en","value":"F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.3.0, Svc::FileDownlink SendPartial range validation is vulnerable because unchecked startOffset plus length arithmetic bypasses the range check and stores a wrapped m_endOffset that is inconsistent with m_byteOffset. When an existing source file is larger than a valid startOffset and a SendPartial command supplies a length whose U32 sum with that offset wraps below the file size, under standard F Prime assertion handling, the first data-packet transition reaches FW_ASSERT and aborts or resets the process, causing denial of service. This issue is fixed in version 4.3.0."}],"affected":[{"vendor":"nasa","product":"fprime","versions":[{"version":"< 4.3.0","status":"affected"}]}],"references":[{"url":"https://github.com/nasa/fprime/security/advisories/GHSA-hcmw-g425-8h9g","name":"https://github.com/nasa/fprime/security/advisories/GHSA-hcmw-g425-8h9g","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/nasa/fprime/pull/5565","name":"https://github.com/nasa/fprime/pull/5565","tags":["x_refsource_MISC"]},{"url":"https://github.com/nasa/fprime/commit/33fe2a4fe3fd5ff1b14985669fbad09f070e9914","name":"https://github.com/nasa/fprime/commit/33fe2a4fe3fd5ff1b14985669fbad09f070e9914","tags":["x_refsource_MISC"]},{"url":"https://github.com/nasa/fprime/commit/95eeb5cfb44e5609eff0887f0e11e640cdacef6b","name":"https://github.com/nasa/fprime/commit/95eeb5cfb44e5609eff0887f0e11e640cdacef6b","tags":["x_refsource_MISC"]},{"url":"https://github.com/nasa/fprime/releases/tag/v4.3.0","name":"https://github.com/nasa/fprime/releases/tag/v4.3.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-190","lang":"en","description":"CWE-190: Integer Overflow or Wraparound","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-617","lang":"en","description":"CWE-617: Reachable Assertion","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-14T17:09:20.199Z"},"source":{"advisory":"GHSA-hcmw-g425-8h9g","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/nasa/fprime/security/advisories/GHSA-hcmw-g425-8h9g","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-20T01:42:03.567016Z","id":"CVE-2026-92157","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-20T01:42:27.964Z"}}]}}}