Fix Py_XDECREF of an unitialized pointer

- Resolves: RHEL-120796

fix-pyxdecref-uninit-pointer.patch

@@ -0,0 +1,24 @@
+From ee1a87bc489f14681dacd3fdc518dd40bbab81ea Mon Sep 17 00:00:00 2001
+From: Charalampos Stratakis <cstratak@redhat.com>
+Date: Fri, 12 Dec 2025 19:54:48 +0100
+Subject: [PATCH] Initialize interned_fields to NULL
+
+This avoids a code path where Py_XDECREF could be used on
+interned_fields when uninitialized.
+---
+ src/c/_cffi_backend.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/c/_cffi_backend.c b/src/c/_cffi_backend.c
+index 835e3318..6087e635 100644
+--- a/src/c/_cffi_backend.c
++++ b/src/c/_cffi_backend.c
+@@ -5152,7 +5152,7 @@ static PyObject *b_complete_struct_or_union_lock_held(CTypeDescrObject *ct,
+     Py_ssize_t byteoffsetorg;
+     CFieldObject **previous;
+     int prev_bitfield_size, prev_bitfield_free;
+-    PyObject *interned_fields;
++    PyObject *interned_fields = NULL;
+ 
+     sflags = complete_sflags(sflags);
+     if (sflags & SF_PACKED)

python3.14-cffi.spec

@@ -10,6 +10,11 @@ License:        MIT AND PSF-2.0
 URL:            https://github.com/python-cffi/cffi
 Source:         %{url}/archive/v%{version}/cffi-%{version}.tar.gz
 
+# Fix coverity scan issue
+# Possibility of using Py_XDECREF on an uninitialized pointer
+# Resolved upstream: https://github.com/python-cffi/cffi/pull/221
+Patch:          fix-pyxdecref-uninit-pointer.patch
+
 BuildRequires:  python%{python3_pkgversion}-devel
 BuildRequires:  python%{python3_pkgversion}-pytest
 BuildRequires:  make