bpo-25862: Fix several bugs in the _io module. by serhiy-storchaka · Pull Request #8026

bpo-25862: Fix several bugs in the _io module. by serhiy-storchaka · Pull Request #8026 · python/cpython

They can be exposed when some C API calls fail due to lack of
memory.

* Failed Py_BuildValue() could cause an assertion error in the
  following TextIOWrapper.tell().
* input_chunk could be decrefed twice in TextIOWrapper.seek()
  after failed Py_BuildValue().
* initvalue could leak in StringIO.__getstate__() after failed
  PyDict_Copy().

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request

Jun 30, 2018

They can be exposed when some C API calls fail due to lack of
memory.

* Failed Py_BuildValue() could cause an assertion error in the
  following TextIOWrapper.tell().
* input_chunk could be decrefed twice in TextIOWrapper.seek()
  after failed Py_BuildValue().
* initvalue could leak in StringIO.__getstate__() after failed
  PyDict_Copy().
(cherry picked from commit fdb5a50)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request

Jun 30, 2018

They can be exposed when some C API calls fail due to lack of
memory.

* Failed Py_BuildValue() could cause an assertion error in the
  following TextIOWrapper.tell().
* input_chunk could be decrefed twice in TextIOWrapper.seek()
  after failed Py_BuildValue().
* initvalue could leak in StringIO.__getstate__() after failed
  PyDict_Copy().
(cherry picked from commit fdb5a50)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

serhiy-storchaka added a commit to serhiy-storchaka/cpython that referenced this pull request

Jun 30, 2018

They can be exposed when some C API calls fail due to lack of
memory.

* Failed Py_BuildValue() could cause an assertion error in the
  following TextIOWrapper.tell().
* input_chunk could be decrefed twice in TextIOWrapper.seek()
  after failed Py_BuildValue().
* initvalue could leak in StringIO.__getstate__() after failed
  PyDict_Copy()..
(cherry picked from commit fdb5a50)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

miss-islington added a commit that referenced this pull request

Jun 30, 2018

They can be exposed when some C API calls fail due to lack of
memory.

* Failed Py_BuildValue() could cause an assertion error in the
  following TextIOWrapper.tell().
* input_chunk could be decrefed twice in TextIOWrapper.seek()
  after failed Py_BuildValue().
* initvalue could leak in StringIO.__getstate__() after failed
  PyDict_Copy().
(cherry picked from commit fdb5a50)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

miss-islington added a commit that referenced this pull request

Jun 30, 2018

They can be exposed when some C API calls fail due to lack of
memory.

* Failed Py_BuildValue() could cause an assertion error in the
  following TextIOWrapper.tell().
* input_chunk could be decrefed twice in TextIOWrapper.seek()
  after failed Py_BuildValue().
* initvalue could leak in StringIO.__getstate__() after failed
  PyDict_Copy().
(cherry picked from commit fdb5a50)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

serhiy-storchaka added a commit that referenced this pull request

Dec 4, 2018

They can be exposed when some C API calls fail due to lack of
memory.

* Failed Py_BuildValue() could cause an assertion error in the
  following TextIOWrapper.tell().
* initvalue could leak in StringIO.__getstate__() after failed
  PyDict_Copy().
(cherry picked from commit fdb5a50)