CVE-2026-92157
F´: FileDownlink SendPartial integer overflow lets legal startOffset/length values reach a reachable assertion
- State
- Published
- Severity
- 6.5 Medium
- Published
- Oct 14, 2026
- Updated
- Oct 20, 2026
- Reserved
- Sep 15, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.5 Medium | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
fprimenasa |
|
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
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