From 3afaea1abbb05654a459da2ef956a6e624b85609 Mon Sep 17 00:00:00 2001
From: Petr Viktorin <encukou@gmail.com>
Date: Wed, 23 Aug 2023 17:50:48 +0200
Subject: [PATCH] gh-107811: tarfile: treat overflow in UID/GID as failure to
 set it

---
 Lib/tarfile.py                                                 | 3 ++-
 .../Library/2023-08-23-17-34-39.gh-issue-107811.3Fng72.rst     | 3 +++
 2 files changed, 5 insertions(+), 1 deletion(-)
 create mode 100644 Misc/NEWS.d/next/Library/2023-08-23-17-34-39.gh-issue-107811.3Fng72.rst

diff --git a/Lib/tarfile.py b/Lib/tarfile.py
index a835d00c90c92c..726f9f50ba2e72 100755
--- a/Lib/tarfile.py
+++ b/Lib/tarfile.py
@@ -2557,7 +2557,8 @@ def chown(self, tarinfo, targetpath, numeric_owner):
                     os.lchown(targetpath, u, g)
                 else:
                     os.chown(targetpath, u, g)
-            except OSError as e:
+            except (OSError, OverflowError) as e:
+                # OverflowError can be raised if an ID doesn't fit in `id_t`
                 raise ExtractError("could not change owner") from e
 
     def chmod(self, tarinfo, targetpath):
diff --git a/Misc/NEWS.d/next/Library/2023-08-23-17-34-39.gh-issue-107811.3Fng72.rst b/Misc/NEWS.d/next/Library/2023-08-23-17-34-39.gh-issue-107811.3Fng72.rst
new file mode 100644
index 00000000000000..ffca4131db228b
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-08-23-17-34-39.gh-issue-107811.3Fng72.rst
@@ -0,0 +1,3 @@
+:mod:`tarfile`: extraction of members with overly large UID or GID (e.g. on
+an OS with 32-bit :c:type:`!id_t`) now fails in the same way as failing to
+set the ID.