EUVD-2026-26698CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
5DescriptionNVD
AGL agl-service-can-low-level contains a stack buffer overflow in the uds-c library. The send_diagnostic_request function in uds.c allocates a 6-byte stack buffer (MAX_DIAGNOSTIC_PAYLOAD_SIZE=6) but copies up to 7 bytes (MAX_UDS_REQUEST_PAYLOAD_LENGTH=7) via memcpy at an offset of 1+pid_length (2-3 bytes), resulting in 1-4 bytes of controlled stack overflow. The payload_length field (uint8_t) has no bounds check against the destination buffer. On 32-bit ARM automotive ECUs without stack canaries, this can lead to return address overwrite and RCE.
AnalysisAI
Stack buffer overflow in AGL agl-service-can-low-level's uds-c library enables remote code execution on vulnerable automotive ECUs. The send_diagnostic_request function copies up to 7 bytes into a 6-byte stack buffer without bounds checking, allowing 1-4 bytes of controlled stack corruption. …
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RemediationAI
Within 24 hours: Identify all vehicles and test benches running AGL agl-service-can-low-level and confirm affected uds-c library versions through firmware inventory. Within 7 days: Implement network segmentation to isolate CAN diagnostic interfaces from untrusted networks and disable remote diagnostic access where operationally feasible; document exceptions with compensating controls. …
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