From 1bab198a2edd0d0e6e1627d21a433151ea190500 Mon Sep 17 00:00:00 2001
From: akallabeth <akallabeth@posteo.net>
Date: Thu, 15 Jan 2026 12:02:02 +0100
Subject: [PATCH] [codec,planar] fix decoder length checks

---
 libfreerdp/codec/planar.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libfreerdp/codec/planar.c b/libfreerdp/codec/planar.c
index 1a06e36edb0c..94a640a551d1 100644
--- a/libfreerdp/codec/planar.c
+++ b/libfreerdp/codec/planar.c
@@ -727,6 +727,11 @@ BOOL freerdp_bitmap_decompress_planar(BITMAP_PLANAR_CONTEXT* WINPR_RESTRICT plan
 	WINPR_ASSERT(planar);
 	WINPR_ASSERT(prims);
 
+	if (planar->maxWidth < nSrcWidth)
+		return FALSE;
+	if (planar->maxHeight < nSrcHeight)
+		return FALSE;
+
 	if (nDstStep <= 0)
 		nDstStep = nDstWidth * FreeRDPGetBytesPerPixel(DstFormat);