From c919bcde522ff13728336b726c12de4525962f74 Mon Sep 17 00:00:00 2001
From: nivy <nivy@apple.com>
Date: Tue, 14 Jul 2026 11:01:18 -0700
Subject: [PATCH] Disallow negative buffer sizes

---
 src/java/org/apache/cassandra/config/DatabaseDescriptor.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/java/org/apache/cassandra/config/DatabaseDescriptor.java b/src/java/org/apache/cassandra/config/DatabaseDescriptor.java
index 9477c25478..abff357737 100644
--- a/src/java/org/apache/cassandra/config/DatabaseDescriptor.java
+++ b/src/java/org/apache/cassandra/config/DatabaseDescriptor.java
@@ -3067,7 +3067,7 @@ public class DatabaseDescriptor
 
     public static void setCompressedReadAheadBufferSizeInKb(int sizeInKb)
     {
-        if (sizeInKb != 0 && sizeInKb < 256)
+        if (sizeInKb < 0 || (sizeInKb > 0 && sizeInKb < 256))
             throw new IllegalArgumentException("compressed_read_ahead_buffer_size_in_kb must be at least 256KiB (set to 0 to disable)");
 
         conf.compressed_read_ahead_buffer_size = createIntKibibyteBoundAndEnsureItIsValidForByteConversion(sizeInKb, "compressed_read_ahead_buffer_size");