From 63987b7abaf6907a8985b867be154debfef0ec1b Mon Sep 17 00:00:00 2001
From: Andrew Murray <radarhere@users.noreply.github.com>
Date: Wed, 14 Feb 2024 06:55:13 +1100
Subject: [PATCH 1/2] Set mode to L if palette is missing

---
 Tests/test_file_tga.py    | 5 +++++
 src/PIL/TgaImagePlugin.py | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/Tests/test_file_tga.py b/Tests/test_file_tga.py
index bd8e522c7b5..87a59ff3d7a 100644
--- a/Tests/test_file_tga.py
+++ b/Tests/test_file_tga.py
@@ -133,6 +133,11 @@ def test_small_palette(tmp_path: Path) -> None:
         assert reloaded.getpalette() == colors
 
 
+def test_missing_palette() -> None:
+    with Image.open("Tests/images/dilation4.lut") as im:
+        assert im.mode == "L"
+
+
 def test_save_wrong_mode(tmp_path: Path) -> None:
     im = hopper("PA")
     out = str(tmp_path / "temp.tga")
diff --git a/src/PIL/TgaImagePlugin.py b/src/PIL/TgaImagePlugin.py
index 584932d2c7d..5d48275251e 100644
--- a/src/PIL/TgaImagePlugin.py
+++ b/src/PIL/TgaImagePlugin.py
@@ -85,7 +85,7 @@ def _open(self) -> None:
             elif depth == 16:
                 self._mode = "LA"
         elif imagetype in (1, 9):
-            self._mode = "P"
+            self._mode = "P" if colormaptype else "L"
         elif imagetype in (2, 10):
             self._mode = "RGB"
             if depth == 32:

From 818500b329555969cdb852c81d667cc70faaed94 Mon Sep 17 00:00:00 2001
From: Andrew Murray <radarhere@users.noreply.github.com>
Date: Wed, 14 Feb 2024 07:10:44 +1100
Subject: [PATCH 2/2] Raise an error if map depth is unknown

---
 Tests/images/p_8.tga      | Bin 0 -> 18 bytes
 Tests/test_file_tga.py    |   7 ++++++-
 src/PIL/TgaImagePlugin.py |   3 +++
 3 files changed, 9 insertions(+), 1 deletion(-)
 create mode 100644 Tests/images/p_8.tga

diff --git a/Tests/images/p_8.tga b/Tests/images/p_8.tga
new file mode 100644
index 0000000000000000000000000000000000000000..73759a2822419fd38134be80acf7918c0a437e43
GIT binary patch
literal 18
Wcmb1RWMp7qVB`Q23=KfY!2kdU!vQh?

literal 0
HcmV?d00001

diff --git a/Tests/test_file_tga.py b/Tests/test_file_tga.py
index 87a59ff3d7a..75c592da26b 100644
--- a/Tests/test_file_tga.py
+++ b/Tests/test_file_tga.py
@@ -7,7 +7,7 @@
 
 import pytest
 
-from PIL import Image
+from PIL import Image, UnidentifiedImageError
 
 from .helper import assert_image_equal, assert_image_equal_tofile, hopper
 
@@ -65,6 +65,11 @@ def roundtrip(original_im) -> None:
                     roundtrip(original_im)
 
 
+def test_palette_depth_8(tmp_path: Path) -> None:
+    with pytest.raises(UnidentifiedImageError):
+        Image.open("Tests/images/p_8.tga")
+
+
 def test_palette_depth_16(tmp_path: Path) -> None:
     with Image.open("Tests/images/p_16.tga") as im:
         assert_image_equal_tofile(im.convert("RGB"), "Tests/images/p_16.png")
diff --git a/src/PIL/TgaImagePlugin.py b/src/PIL/TgaImagePlugin.py
index 5d48275251e..b6748c25ed2 100644
--- a/src/PIL/TgaImagePlugin.py
+++ b/src/PIL/TgaImagePlugin.py
@@ -128,6 +128,9 @@ def _open(self) -> None:
                 self.palette = ImagePalette.raw(
                     "BGRA", b"\0" * 4 * start + self.fp.read(4 * size)
                 )
+            else:
+                msg = "unknown TGA map depth"
+                raise SyntaxError(msg)
 
         # setup tile descriptor
         try: