From 1cebba76e81cbff543c7982def4206ab3c5c9579 Mon Sep 17 00:00:00 2001
From: Inada Naoki <songofacandy@gmail.com>
Date: Fri, 19 Jun 2026 00:14:08 +0900
Subject: [PATCH 1/2] release v1.2.1

---
 CHANGELOG.md        | 9 +++++++++
 README.md           | 5 ++++-
 msgpack/__init__.py | 4 ++--
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a29b4b2f..b8fbd8ce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+# 1.2.1
+
+Release Date: 2026-06-19
+
+Fix a segfault when calling `Unpacker.unpack()` or `Unpacker.skip()` after an unpacking failure.
+But note that reusing the same `Unpacker` instance after an unpacking failure is not supported.
+Please create a new `Unpacker` instance instead. GHSA-6v7p-g79w-8964
+
+
 # 1.2.0
 
 Release Date: 2026-06-11
diff --git a/README.md b/README.md
index 223742dd..90c3520f 100644
--- a/README.md
+++ b/README.md
@@ -72,6 +72,9 @@ for unpacked in unpacker:
     print(unpacked)
 ```
 
+> [!IMPORTANT]
+> If `Unpacker.unpack()` stops with an exception other than OutOfData, that `Unpacker` cannot be reused. Create a new Unpacker when reading another stream.
+
 
 ### Packing/unpacking of custom data types
 
@@ -220,7 +223,7 @@ When upgrading from msgpack-0.4 or earlier, do `pip uninstall msgpack-python` be
 
   * The extension module no longer supports Python 2.
     The pure Python implementation (`msgpack.fallback`) is used for Python 2.
-  
+
   * msgpack 1.0.6 drops official support of Python 2.7, as pip and
     GitHub Action "setup-python" no longer supports Python 2.7.
 
diff --git a/msgpack/__init__.py b/msgpack/__init__.py
index f053abd0..eeb85afa 100644
--- a/msgpack/__init__.py
+++ b/msgpack/__init__.py
@@ -4,8 +4,8 @@
 from .exceptions import *  # noqa: F403
 from .ext import ExtType, Timestamp
 
-version = (1, 2, 0)
-__version__ = "1.2.0"
+version = (1, 2, 1)
+__version__ = "1.2.1"
 
 
 if os.environ.get("MSGPACK_PUREPYTHON"):

From 1cd90a10139b4e0d1989d7fea9b629f0a4f32409 Mon Sep 17 00:00:00 2001
From: Inada Naoki <songofacandy@gmail.com>
Date: Fri, 19 Jun 2026 00:18:31 +0900
Subject: [PATCH 2/2] Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
---
 README.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 90c3520f..e66d4549 100644
--- a/README.md
+++ b/README.md
@@ -73,7 +73,8 @@ for unpacked in unpacker:
 ```
 
 > [!IMPORTANT]
-> If `Unpacker.unpack()` stops with an exception other than OutOfData, that `Unpacker` cannot be reused. Create a new Unpacker when reading another stream.
+> If `Unpacker.unpack()` stops with an exception other than `OutOfData`, that `Unpacker` cannot be reused.
+> Create a new `Unpacker` when reading another stream.
 
 
 ### Packing/unpacking of custom data types