diff --git a/benches/execution.rs b/benches/execution.rs
index a09ab9c7890..c0c783f24ed 100644
--- a/benches/execution.rs
+++ b/benches/execution.rs
@@ -7,7 +7,7 @@ use criterion::{
     Bencher, BenchmarkGroup, BenchmarkId, Criterion, Throughput, criterion_group, criterion_main,
     measurement::WallTime,
 };
-use pyo3::types::{PyCode, PyCodeInput, PyCodeMethods, PyDict, PyDictMethods};
+use pyo3::types::{PyCode, PyCodeMethods, PyDict, PyDictMethods, code::PyCodeInput};
 use rustpython_compiler::Mode;
 use rustpython_vm::{Interpreter, PyResult, Settings};
 use std::{collections::HashMap, path::Path};
diff --git a/crates/host_env/src/crt_fd.rs b/crates/host_env/src/crt_fd.rs
index 5b2cf685be1..6a8cc1987f9 100644
--- a/crates/host_env/src/crt_fd.rs
+++ b/crates/host_env/src/crt_fd.rs
@@ -370,7 +370,7 @@ pub fn closerange(fd_low: Raw, fd_high: Raw) {
     // CPython clamps low to 0.
     let fd_low = fd_low.max(0);
     // close_range(2) is [low, high] whereas CPython's is [low, high).
-    if fd_high < fd_low {
+    if fd_high <= fd_low {
         return;
     }
     let high = fd_high - 1;
diff --git a/extra_tests/snippets/stdlib_os.py b/extra_tests/snippets/stdlib_os.py
index cc845adafe0..ddddb3c9e25 100644
--- a/extra_tests/snippets/stdlib_os.py
+++ b/extra_tests/snippets/stdlib_os.py
@@ -1,6 +1,7 @@
 import itertools
 import os
 import stat
+import subprocess
 import sys
 import time
 
@@ -113,6 +114,54 @@ def __index__(self):
     chmod_supports_directory_descriptors()
 
 
+# Run in a child: a broken empty-range implementation can close every descriptor.
+subprocess.run(
+    [
+        sys.executable,
+        "-c",
+        """
+import errno
+import os
+import sys
+
+known_reference_bug = (
+    sys.implementation.name == "cpython"
+    and sys.platform == "linux"
+    and sys.version_info == (3, 15, 0, "final", 0)
+)
+if known_reference_bug:
+    import sysconfig
+    known_reference_bug = bool(sysconfig.get_config_var("HAVE_CLOSE_RANGE"))
+
+sentinel = os.open(os.devnull, os.O_RDONLY)
+for low, high in ((0, 0), (-1, 0), (sentinel, sentinel),
+                  (sentinel + 1, sentinel), (-2, -1)):
+    # TODO: remove once the reference includes python/cpython#159183.
+    # https://github.com/python/cpython/issues/159182
+    if known_reference_bug and (low, high) in ((0, 0), (-1, 0), (-2, -1)):
+        continue
+    os.closerange(low, high)
+    os.fstat(sentinel)
+
+target = os.open(os.devnull, os.O_RDONLY)
+other = os.open(os.devnull, os.O_RDONLY)
+os.closerange(target, target + 1)
+os.fstat(sentinel)
+os.fstat(other)
+try:
+    os.fstat(target)
+except OSError as exc:
+    assert exc.errno == errno.EBADF
+else:
+    raise AssertionError("closerange did not close its single descriptor")
+os.close(other)
+os.close(sentinel)
+""",
+    ],
+    check=True,
+)
+
+
 fd = os.open("README.md", os.O_RDONLY)
 assert fd > 0