diff --git a/RHEL-120230.patch b/RHEL-120230.patch
new file mode 100644
index 0000000..94bb184
--- /dev/null
+++ b/RHEL-120230.patch
@@ -0,0 +1,70 @@
+From 0117a16f9c0b6e3462b8547fa56ea90f3e198b10 Mon Sep 17 00:00:00 2001
+From: Lee Howard <faxguy@howardsilvan.com>
+Date: Mon, 19 May 2025 10:53:30 -0700
+Subject: [PATCH] Don't skip the first line of the input image. Addresses issue
+ #703
+
+---
+ tools/tiffdither.c | 4 ++--
+ tools/tiffmedian.c | 9 ++++++---
+ 2 files changed, 8 insertions(+), 5 deletions(-)
+
+diff --git a/tools/tiffdither.c b/tools/tiffdither.c
+index 247553c..cc41c51 100644
+--- a/tools/tiffdither.c
++++ b/tools/tiffdither.c
+@@ -93,7 +93,7 @@ fsdither(TIFF* in, TIFF* out)
+ 	nextptr = nextline;
+ 	for (j = 0; j < imagewidth; ++j)
+ 		*nextptr++ = *inptr++;
+-	for (i = 1; i < imagelength; ++i) {
++	for (i = 0; i < imagelength; ++i) {
+ 		tmpptr = thisline;
+ 		thisline = nextline;
+ 		nextline = tmpptr;
+@@ -136,7 +136,7 @@ fsdither(TIFF* in, TIFF* out)
+ 					nextptr[0] += v / 16;
+ 			}
+ 		}
+-		if (TIFFWriteScanline(out, outline, i-1, 0) < 0)
++		if (TIFFWriteScanline(out, outline, i, 0) < 0)
+ 			goto skip_on_error;
+ 	}
+ 	goto exit_label;
+diff --git a/tools/tiffmedian.c b/tools/tiffmedian.c
+index f0c892e..99fd1f2 100644
+--- a/tools/tiffmedian.c
++++ b/tools/tiffmedian.c
+@@ -370,7 +370,10 @@ get_histogram(TIFF* in, Colorbox* box)
+ 	}
+ 	for (i = 0; i < imagelength; i++) {
+ 		if (TIFFReadScanline(in, inputline, i, 0) <= 0)
+-			break;
++		{
++			fprintf(stderr, "Error reading scanline\n");
++			exit(EXIT_FAILURE);
++		}
+ 		inptr = inputline;
+ 		for (j = imagewidth; j-- > 0;) {
+ 			red = (*inptr++) & 0xff >> COLOR_SHIFT;
+@@ -829,7 +832,7 @@ quant_fsdither(TIFF* in, TIFF* out)
+ 	outline = (unsigned char *) _TIFFmalloc(TIFFScanlineSize(out));
+ 
+ 	GetInputLine(in, 0, goto bad);		/* get first line */
+-	for (i = 1; i <= imagelength; ++i) {
++	for (i = 0; i < imagelength; ++i) {
+ 		SWAP(short *, thisline, nextline);
+ 		lastline = (i >= imax);
+ 		if (i <= imax)
+@@ -900,7 +903,7 @@ quant_fsdither(TIFF* in, TIFF* out)
+ 				nextptr += 3;
+ 			}
+ 		}
+-		if (TIFFWriteScanline(out, outline, i-1, 0) < 0)
++		if (TIFFWriteScanline(out, outline, i, 0) < 0)
+ 			break;
+ 	}
+ bad:
+-- 
+2.47.3
+
diff --git a/libtiff.spec b/libtiff.spec
index c6e1e3b..affd234 100644
--- a/libtiff.spec
+++ b/libtiff.spec
@@ -1,7 +1,7 @@
 Summary:       Library of functions for manipulating TIFF format image files
 Name:          libtiff
 Version:       4.0.9
-Release:       35%{?dist}
+Release:       36%{?dist}
 License:       libtiff
 Group:         System Environment/Libraries
 URL:           http://www.simplesystems.org/libtiff/
@@ -67,6 +67,10 @@ Patch45:       libtiff-4.0.9-CVE-2017-17095.patch
 # CVE-2025-9900
 Patch46:       RHEL-112533.patch
 
+# Fix skipping first line of input image in tiffdither and tiffmedian, RHEL-120230
+# CVE-2025-8176
+Patch47:       RHEL-120230.patch
+
 BuildRequires: gcc, gcc-c++
 BuildRequires: zlib-devel libjpeg-devel jbigkit-devel
 BuildRequires: libtool automake autoconf pkgconfig
@@ -219,6 +223,10 @@ find html -name 'Makefile*' | xargs rm
 %{_mandir}/man1/*
 
 %changelog
+* Mon Nov 03 2025 RHEL Packaging Agent <jotnar@redhat.com> - 4.0.9-36
+- fix CVE-2025-8176: prevent skipping first line in tiffdither and
+  tiffmedian tools (RHEL-120230)
+
 * Tue Oct 14 2025 RHEL Packaging Agent <jotnar@redhat.com> - 4.0.9-35
 - fix CVE-2025-9900: buffer underflow crash in TIFFReadRGBAImageOriented()
   (RHEL-112533)