From 6881e3111bed100be58e692adf8e26e25f3d2c53 Mon Sep 17 00:00:00 2001
From: Mirco Miranda <mircomir@gmail.com>
Date: Tue, 9 Sep 2025 15:59:14 +0200
Subject: [PATCH] HDR: Limits the header to the first 128 lines

The HDR header is a set of text information spread across a few lines.
According to the specifications I have, the parameters seem to be a total of 7 / 8 but there could be more. This patch limits the header to 128 lines of maximum 1024 bytes.

Closes #40
---
 src/imageformats/hdr.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/imageformats/hdr.cpp b/src/imageformats/hdr.cpp
index 264d1ca..4ee61ac 100644
--- a/src/imageformats/hdr.cpp
+++ b/src/imageformats/hdr.cpp
@@ -126,6 +126,7 @@ public:
     {
         Header h;
 
+        int cnt = 0;
         int len;
         QByteArray line(MAXLINE + 1, Qt::Uninitialized);
         QByteArray format;
@@ -167,7 +168,7 @@ public:
                 }
             }
 
-        } while ((len > 0) && (line[0] != '\n'));
+        } while ((len > 0) && (line[0] != '\n') && (cnt++ < 128));
 
         if (format != "32-bit_rle_rgbe") {
             qCDebug(HDRPLUGIN) << "Unknown HDR format:" << format;