CVE-2026-37537

Description

collin80/Open-SAE-J1939 thru commit 744024d4306bc387857dfce439558336806acb06 (2023-03-08) contains an integer underflow leading to out-of-bounds write in Transport Protocol Data Transfer handling. At line 23: uint8_t index = data[0] - 1. When data[0] (sequence number from CAN frame) is 0, index underflows to 255. Subsequent write at tp_dt->data[255*7 + i-1] reaches offset 1791, exceeding the MAX_TP_DT buffer (1785 bytes) by 6 bytes.

PUBLISHED Reserved 2026-04-06 | Published 2026-05-01 | Updated 2026-05-01 | Assigner mitre

References

github.com/DanielMartensson/Open-SAE-J1939

github.com/collin80/Open-SAE-J1939

gist.github.com/sgInnora/f4ac66faeefe07a653ceeb3f58cdc381

cve.org (CVE-2026-37537)

nvd.nist.gov (CVE-2026-37537)

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