Unrated severityOSV Advisory· Published Jan 10, 2026· Updated Jan 13, 2026
CryptoLib Memory Leak on HTTP Error Response in KMC Client
CVE-2026-22025
Description
CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Procedures (SDLS-EP) to secure communications between a spacecraft running the core Flight System (cFS) and a ground station. Prior to version 1.4.3, when the KMC server returns a non-200 HTTP status code, cryptography_encrypt() and cryptography_decrypt() return immediately without freeing previously allocated buffers. Each failed request leaks approximately 467 bytes. Repeated failures (from a malicious server or network issues) can gradually exhaust memory. This issue has been patched in version 1.4.3.
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Affected products
2Patches
Vulnerability mechanics
References
3- github.com/nasa/CryptoLib/commit/2372efd3da1ccb226b4297222e25f41ecc84821dmitrex_refsource_MISC
- github.com/nasa/CryptoLib/releases/tag/v1.4.3mitrex_refsource_MISC
- github.com/nasa/CryptoLib/security/advisories/GHSA-h74x-vwwr-mm5gmitrex_refsource_CONFIRM
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