| Titre | PX4 Autopilot main branch Stack-based Buffer Overflow |
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| Description | A stack-buffer-overflow vulnerability exists in PX4’s mavlink_log_handler.cpp/.h when handling logs: LogEntry.filepath is a fixed-size buffer (~60 bytes), but logdata.txt parsing uses sscanf(..., "%s", entry->filepath) without a width limit, so an overly long filename/path token can overflow the stack and crash. In practice this is remotely triggerable via the FTP microservice: an attacker creates a log file in the log directory with an excessively long filename, then sends LOG_REQUEST_LIST (receiving LOG_ENTRY) followed by LOG_REQUEST_DATA; when the handler processes the long filename during log access/parsing, the unbounded %s write overflows LogEntry.filepath, leading to a remote denial-of-service and potentially more severe memory-corruption impact. |
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| La source | ⚠️ https://github.com/PX4/PX4-Autopilot/issues/26118 |
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| Utilisateur | Fuzz0X (UID 93056) |
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| Soumission | 17/12/2025 03:37 (il y a 4 mois) |
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| Modérer | 27/12/2025 14:39 (10 days later) |
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| Statut | Accepté |
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| Entrée VulDB | 338527 [PX4 PX4-Autopilot jusqu’à 1.16.0 mavlink_log_handler.cpp log_entry_from_id buffer overflow] |
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| Points | 20 |
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