From 5662b207b898e6ac2d700dfdb9c956808c4a027e Mon Sep 17 00:00:00 2001
From: Maurice Fisher <mfisher@adobe.com>
Date: Mon, 29 Jan 2024 11:07:48 -0500
Subject: [PATCH] Fix case when the JPEG segment has a length of 0

---
 jfifdump/src/reader.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/jfifdump/src/reader.rs b/jfifdump/src/reader.rs
index 1e24ce5..1d4f4c9 100644
--- a/jfifdump/src/reader.rs
+++ b/jfifdump/src/reader.rs
@@ -63,7 +63,8 @@ impl<R: Read> Reader<R> {
     fn read_length(&mut self) -> Result<usize, JfifError> {
         let length = self.read_u16()? as usize;
 
-        if length <= 2 {
+        // lengths 0 and greater are allowed
+        if length < 2 {
             return Err(JfifError::InvalidMarkerLength(length));
         }