| tiêu đề | marcobambini gravity v0.9.7 Out-of-Bounds Read |
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| Mô tả | parse_number_expression in src/compiler/gravity_parser.c checks whether a number literal uses a 0b/0o/0x prefix by testing value[0]=='0' and then unconditionally executing toupper(value[1]). When the number token is the single character '0' located at the very last byte of the source buffer (e.g. a file ending in = 0), value[1] points one byte past the end of the input, triggering a deterministic 1-byte heap out-of-bounds read.
Affected versions: Gravity v0.9.7 / HEAD 17a280b83c10424597bf4d130d208b72de731c2a
Severity: Medium (deterministic 1-byte heap OOB read; crash under ASan; possible 1-byte heap/redzone leak in exact-size production buffers)
CWE: CWE-125 (Out-of-bounds Read) |
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| Nguồn | ⚠️ https://github.com/marcobambini/gravity/issues/446 |
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| Người dùng | lrrh (UID 100159) |
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| Đệ trình | 08/08/2026 10:03 (cách đây 1 tháng) |
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| Kiểm duyệt | 13/09/2026 11:53 (1 month later) |
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| Trạng thái | được chấp nhận |
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| Mục VulDB | 403270 [marcobambini Gravity đến 0.9.7 Number Parser gravity_parser.c parse_number_expression tiết lộ thông tin] |
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| điểm | 20 |
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