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goodixmoc: Ensure we do not overflow when reading the payload

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Reported by: Keith Linneman (LinnemanLabs)
This commit is contained in:
Marco Trevisan (Treviño)
2026-07-13 08:13:46 +00:00
committed by Marco Trevisan
parent f15a62b5aa
commit 0c0baf639e
1 changed files with 6 additions and 0 deletions
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libfprint/drivers/goodixmoc/goodix_proto.c
+6
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@@ -296,6 +296,12 @@ gx_proto_parse_fingerid (FpiByteReader *reader,
if (!fpi_byte_reader_get_uint8 (reader, &template->payload.size)) if (!fpi_byte_reader_get_uint8 (reader, &template->payload.size))
g_return_val_if_reached (-1); g_return_val_if_reached (-1);
if (template->payload.size > sizeof (template->payload.data))
{
g_warning ("Device reported oversized payload (%d)", template->payload.size);
return -1;
}
if (!fpi_byte_reader_get_data (reader, template->payload.size, &buffer)) if (!fpi_byte_reader_get_data (reader, template->payload.size, &buffer))
g_return_val_if_reached (-1); g_return_val_if_reached (-1);