From d9374963cd40a270de45dce7f5716850c9ce95fe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marco=20Trevisan=20=28Trevi=C3=B1o=29?= <mail@3v1n0.net>
Date: Tue, 30 Jun 2026 12:15:54 +0200
Subject: [PATCH] goodixmoc: Handle cases in which the header lenght is smaller
 than CRC size

Reported by: Keith Linneman (LinnemanLabs)
---
 libfprint/drivers/goodixmoc/goodix_proto.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libfprint/drivers/goodixmoc/goodix_proto.c b/libfprint/drivers/goodixmoc/goodix_proto.c
index 3812ea8d..9bcb6fe4 100644
--- a/libfprint/drivers/goodixmoc/goodix_proto.c
+++ b/libfprint/drivers/goodixmoc/goodix_proto.c
@@ -253,6 +253,9 @@ gx_proto_parse_header (FpiByteReader *reader,
   if (!fpi_byte_reader_get_uint8 (reader, &pheader->rev_crc8))
     g_return_val_if_reached (-1);
 
+  if (pheader->len < PACKAGE_CRC_SIZE)
+    return -1;
+
   pheader->len -= PACKAGE_CRC_SIZE;
 
   return 0;