diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 7cf9df57c0e1..857a32f67384 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,15 @@
 Changelog
 =========
 
+.. _v41-0-6:
+
+41.0.6 - 2023-11-27
+~~~~~~~~~~~~~~~~~~~
+
+* Fixed a null-pointer-dereference and segfault that could occur when loading
+  certificates from a PKCS#7 bundle.  Credit to **pkuzco** for reporting the
+  issue. **CVE-2023-49083**
+
 .. _v41-0-5:
 
 41.0.5 - 2023-10-24
diff --git a/docs/spelling_wordlist.txt b/docs/spelling_wordlist.txt
index 62a62fb96e34..74642f324e67 100644
--- a/docs/spelling_wordlist.txt
+++ b/docs/spelling_wordlist.txt
@@ -38,6 +38,7 @@ decrypted
 decrypting
 deprecations
 DER
+dereference
 deserialize
 deserialized
 Deserialization
diff --git a/pyproject.toml b/pyproject.toml
index d48ddef02211..900fbb502904 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,7 +11,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "cryptography"
-version = "41.0.5"
+version = "41.0.6"
 authors = [
     {name = "The Python Cryptographic Authority and individual contributors", email = "cryptography-dev@python.org"}
 ]
diff --git a/src/cryptography/__about__.py b/src/cryptography/__about__.py
index 550ee4508d16..d267dc785605 100644
--- a/src/cryptography/__about__.py
+++ b/src/cryptography/__about__.py
@@ -10,7 +10,7 @@
     "__copyright__",
 ]
 
-__version__ = "41.0.5"
+__version__ = "41.0.6"
 
 
 __author__ = "The Python Cryptographic Authority and individual contributors"
diff --git a/src/cryptography/hazmat/backends/openssl/backend.py b/src/cryptography/hazmat/backends/openssl/backend.py
index 02d51094cfe5..f1c79008b689 100644
--- a/src/cryptography/hazmat/backends/openssl/backend.py
+++ b/src/cryptography/hazmat/backends/openssl/backend.py
@@ -1890,9 +1890,12 @@ def _load_pkcs7_certificates(self, p7) -> typing.List[x509.Certificate]:
                 _Reasons.UNSUPPORTED_SERIALIZATION,
             )
 
+        certs: list[x509.Certificate] = []
+        if p7.d.sign == self._ffi.NULL:
+            return certs
+
         sk_x509 = p7.d.sign.cert
         num = self._lib.sk_X509_num(sk_x509)
-        certs = []
         for i in range(num):
             x509 = self._lib.sk_X509_value(sk_x509, i)
             self.openssl_assert(x509 != self._ffi.NULL)
diff --git a/src/rust/src/lib.rs b/src/rust/src/lib.rs
index 4d88e2813b50..b58fa316ea00 100644
--- a/src/rust/src/lib.rs
+++ b/src/rust/src/lib.rs
@@ -3,6 +3,8 @@
 // for complete details.
 
 #![deny(rust_2018_idioms)]
+// Work-around for https://github.com/PyO3/pyo3/issues/3561
+#![allow(unknown_lints, clippy::unnecessary_fallible_conversions)]
 
 mod asn1;
 mod backend;
diff --git a/tests/hazmat/primitives/test_pkcs7.py b/tests/hazmat/primitives/test_pkcs7.py
index 172cf40bd6e4..f6ad64151cb3 100644
--- a/tests/hazmat/primitives/test_pkcs7.py
+++ b/tests/hazmat/primitives/test_pkcs7.py
@@ -89,6 +89,12 @@ def test_load_pkcs7_unsupported_type(self, backend):
                 mode="rb",
             )
 
+    def test_load_pkcs7_empty_certificates(self, backend):
+        der = b"\x30\x0B\x06\x09\x2A\x86\x48\x86\xF7\x0D\x01\x07\x02"
+
+        certificates = pkcs7.load_der_pkcs7_certificates(der)
+        assert certificates == []
+
 
 # We have no public verification API and won't be adding one until we get
 # some requirements from users so this function exists to give us basic
diff --git a/vectors/cryptography_vectors/__about__.py b/vectors/cryptography_vectors/__about__.py
index 56336c326d11..98da9267aa4c 100644
--- a/vectors/cryptography_vectors/__about__.py
+++ b/vectors/cryptography_vectors/__about__.py
@@ -6,4 +6,4 @@
     "__version__",
 ]
 
-__version__ = "41.0.5"
+__version__ = "41.0.6"
diff --git a/vectors/pyproject.toml b/vectors/pyproject.toml
index 8d1e750be43e..a37e2da94326 100644
--- a/vectors/pyproject.toml
+++ b/vectors/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "cryptography_vectors"
-version = "41.0.5"
+version = "41.0.6"
 authors = [
     {name = "The Python Cryptographic Authority and individual contributors", email = "cryptography-dev@python.org"}
 ]