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Harden Unpacker.__init__ re-entry cleanup to prevent buffer/context leaks (#687)

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Copilot 2026-06-03 16:40:16 +09:00 • committed by GitHub
parent 7df7136e20
commit 77395c19a5
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2 changed files with 42 additions and 3 deletions
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9
msgpack/_unpacker.pyx
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@ -317,9 +317,6 @@ cdef class Unpacker:
cdef Py_ssize_t max_buffer_size
cdef uint64_t stream_offset
def __cinit__(self):
self.buf = NULL
def __dealloc__(self):
unpack_clear(&self.ctx)
PyMem_Free(self.buf)
@ -338,6 +335,12 @@ cdef class Unpacker:
Py_ssize_t max_ext_len=-1):
cdef const char *cerr=NULL
unpack_clear(&self.ctx)
unpack_init(&self.ctx)
if self.buf != NULL:
PyMem_Free(self.buf)
self.buf = NULL
self.object_hook = object_hook
self.object_pairs_hook = object_pairs_hook
self.list_hook = list_hook