From 390d3e9fbec6660c108805b282455fafc5a66606 Mon Sep 17 00:00:00 2001
From: pancake <pancake@nowsecure.com>
Date: Thu, 8 Jul 2021 20:11:55 +0200
Subject: [PATCH] LibVT: Ignore DECSTBM with invalid values (#8559)

Co-authored-by: pancake <pancake@nopcode.org>
---
 Userland/Libraries/LibVT/Terminal.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Userland/Libraries/LibVT/Terminal.cpp b/Userland/Libraries/LibVT/Terminal.cpp
index e21635f8d9..ce1d054c9a 100644
--- a/Userland/Libraries/LibVT/Terminal.cpp
+++ b/Userland/Libraries/LibVT/Terminal.cpp
@@ -396,6 +396,9 @@ void Terminal::DECSTBM(Parameters params)
         dbgln("Error: DECSTBM: scrolling region invalid: {}-{}", top, bottom);
         return;
     }
+    if (top >= bottom) {
+        return;
+    }
     m_scroll_region_top = top - 1;
     m_scroll_region_bottom = bottom - 1;
     set_cursor(0, 0);