From a091ccb217b7374efb2630d7f063db6a83fbac33 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Thu, 1 May 2025 19:20:51 -0700
Subject: [PATCH] std.compress.zstd.Decompress: cap input buffer required size

---
 lib/std/compress/zstd/Decompress.zig | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/std/compress/zstd/Decompress.zig b/lib/std/compress/zstd/Decompress.zig
index 16a5db4bfc..84eb731b63 100644
--- a/lib/std/compress/zstd/Decompress.zig
+++ b/lib/std/compress/zstd/Decompress.zig
@@ -578,8 +578,10 @@ pub const Frame = struct {
                         @field(self, field_name).table = .{ .rle = try in.takeByte() };
                     },
                     .fse => {
-                        if (in.buffer.len < @intFromEnum(remaining.*)) return error.InputBufferUndersize;
-                        const limited_buffer = try in.peek(@intFromEnum(remaining.*));
+                        const max_table_size = 2048;
+                        const peek_len: usize = remaining.minInt(max_table_size);
+                        if (in.buffer.len < peek_len) return error.InputBufferUndersize;
+                        const limited_buffer = try in.peek(peek_len);
                         var bit_reader: BitReader = .{ .bytes = limited_buffer };
                         const table_size = try Table.decode(
                             &bit_reader,