diff --git a/Misc/NEWS.d/next/Library/2026-06-25-11-52-00.gh-issue-151763.mW3xQp.rst b/Misc/NEWS.d/next/Library/2026-06-25-11-52-00.gh-issue-151763.mW3xQp.rst
new file mode 100644
index 000000000000000..60f6b5b0a7552dc
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2026-06-25-11-52-00.gh-issue-151763.mW3xQp.rst
@@ -0,0 +1,2 @@
+Fixed a possible crash during interpreter creation when memory allocation
+fails in the free-threaded build.
diff --git a/Python/pystate.c b/Python/pystate.c
index fed1df0173bacf1..e0030bf136e05a9 100644
--- a/Python/pystate.c
+++ b/Python/pystate.c
@@ -1505,6 +1505,7 @@ alloc_threadstate(PyInterpreterState *interp)
         }
         reset_threadstate(tstate);
     }
+    tstate->base.interp = interp;
     return tstate;
 }