diff --git a/doc/whatsnew/fragments/8698.bugfix b/doc/whatsnew/fragments/8698.bugfix
new file mode 100644
index 0000000000..278a14fba1
--- /dev/null
+++ b/doc/whatsnew/fragments/8698.bugfix
@@ -0,0 +1,3 @@
+Fix crash in ``invalid-metaclass`` check when a metaclass had duplicate bases.
+
+Closes #8698
diff --git a/pylint/checkers/typecheck.py b/pylint/checkers/typecheck.py
index 1a628f2312..76a98dadfe 100644
--- a/pylint/checkers/typecheck.py
+++ b/pylint/checkers/typecheck.py
@@ -745,7 +745,10 @@ def _no_context_variadic(
 
 
 def _is_invalid_metaclass(metaclass: nodes.ClassDef) -> bool:
-    mro = metaclass.mro()
+    try:
+        mro = metaclass.mro()
+    except (astroid.DuplicateBasesError, astroid.InconsistentMroError):
+        return True
     return not any(is_builtin_object(cls) and cls.name == "type" for cls in mro)
 
 
diff --git a/tests/functional/i/invalid/invalid_metaclass.py b/tests/functional/i/invalid/invalid_metaclass.py
index 3b264d693e..f2f857c71f 100644
--- a/tests/functional/i/invalid/invalid_metaclass.py
+++ b/tests/functional/i/invalid/invalid_metaclass.py
@@ -68,3 +68,11 @@ class Invalid(metaclass=invalid_metaclass_1):  # [invalid-metaclass]
 
 class InvalidSecond(metaclass=invalid_metaclass_2):  # [invalid-metaclass]
     pass
+
+
+class MetaclassWithInvalidMRO(type(object), type(object)):  # [duplicate-bases]
+    pass
+
+
+class FifthInvalid(metaclass=MetaclassWithInvalidMRO):  # [invalid-metaclass]
+    pass
diff --git a/tests/functional/i/invalid/invalid_metaclass.txt b/tests/functional/i/invalid/invalid_metaclass.txt
index 21b31f3c6e..257d300595 100644
--- a/tests/functional/i/invalid/invalid_metaclass.txt
+++ b/tests/functional/i/invalid/invalid_metaclass.txt
@@ -4,3 +4,5 @@ invalid-metaclass:49:0:49:18:ThirdInvalid:Invalid metaclass '2' used:UNDEFINED
 invalid-metaclass:53:0:53:19:FourthInvalid:Invalid metaclass 'Instance of invalid_metaclass.InvalidAsMetaclass' used:UNDEFINED
 invalid-metaclass:65:0:65:13:Invalid:Invalid metaclass 'int' used:UNDEFINED
 invalid-metaclass:69:0:69:19:InvalidSecond:Invalid metaclass '1' used:UNDEFINED
+duplicate-bases:73:0:73:29:MetaclassWithInvalidMRO:Duplicate bases for class 'MetaclassWithInvalidMRO':UNDEFINED
+invalid-metaclass:77:0:77:18:FifthInvalid:Invalid metaclass 'MetaclassWithInvalidMRO' used:UNDEFINED