Backport pull request #18224 from jellyfin/release-12.z

Upgrade ATL to 7.18.0 to fix malformed FLAC hangs

Original-merge: ea99aee41441f2d950553a4db7011c651239db82

Merged-by: crobibero <cody@robibe.ro>

Backported-by: Cody Robibero <cody@robibe.ro>

1 files changed, 26 insertions, 0 deletions

diff --git a/tests/Jellyfin.Providers.Tests/MediaInfo/AtlFlacRegressionTests.cs b/tests/Jellyfin.Providers.Tests/MediaInfo/AtlFlacRegressionTests.cs
new file mode 100644
index 0000000000..75ca0233f3
--- /dev/null
+++ b/tests/Jellyfin.Providers.Tests/MediaInfo/AtlFlacRegressionTests.cs
@@ -0,0 +1,26 @@
+using System.IO;
+using ATL;
+using Xunit;
+
+namespace Jellyfin.Providers.Tests.MediaInfo;
+
+public class AtlFlacRegressionTests
+{
+    [Fact(Timeout = 5000)]
+    public void AtlParser_MalformedFlac_DoesNotHang()
+    {
+        // The 456-byte Vorbis comment block claims a 1024-byte vendor string.
+        byte[] fixture = [
+            (byte)'f', (byte)'L', (byte)'a', (byte)'C',
+            0, 0, 0, 34,
+            .. new byte[34],
+            0x84, 0, 1, 200,
+            0, 4, 0, 0,
+            .. new byte[452]
+        ];
+
+        // ATL 7.16 hangs on this stream.
+        using var stream = new MemoryStream(fixture);
+        _ = new Track(stream, ".flac");
+    }
+}