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Missing Py_DECREF for load_build in _pickle.c #126991

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Legoclones opened this issue Nov 19, 2024 · 1 comment
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Missing Py_DECREF for load_build in _pickle.c #126991

Legoclones opened this issue Nov 19, 2024 · 1 comment
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3.12 bugs and security fixes 3.13 bugs and security fixes 3.14 new features, bugs and security fixes extension-modules C modules in the Modules dir type-bug An unexpected behavior, bug, or error

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@Legoclones
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Legoclones commented Nov 19, 2024 •
edited by bedevere-app bot
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Bug report

Bug description:

In the load_build function of Modules/_pickle.c, if setting a value in a dictionary fails, the dict variable does not have its reference counter decreased.

Pull request was made at #126990

CPython versions tested on:

3.11

Operating systems tested on:

Linux

Linked PRs
@Legoclones Legoclones added the type-bug An unexpected behavior, bug, or error label Nov 19, 2024
@Legoclones Legoclones mentioned this issue Nov 19, 2024
Merged
@ZeroIntensity ZeroIntensity added extension-modules C modules in the Modules dir 3.12 bugs and security fixes 3.13 bugs and security fixes 3.14 new features, bugs and security fixes labels Nov 19, 2024
serhiy-storchaka pushed a commit that referenced this issue Nov 19, 2024
@Legoclones
gh-126991: Fix reference leak in loading pickle's opcode BUILD (GH-12…
29cbcbd 
…6990)

If PyObject_SetItem() fails in the `load_build()` function of _pickle.c, no DECREF for the `dict` variable.
miss-islington pushed a commit to miss-islington/cpython that referenced this issue Nov 19, 2024
@Legoclones @miss-islington
pythongh-126991: Fix reference leak in loading pickle's opcode BUILD (p…
a7fcefd 
…ythonGH-126990)

If PyObject_SetItem() fails in the `load_build()` function of _pickle.c, no DECREF for the `dict` variable.
(cherry picked from commit 29cbcbd)

Co-authored-by: Justin Applegate <[email protected]>
miss-islington pushed a commit to miss-islington/cpython that referenced this issue Nov 19, 2024
@Legoclones @miss-islington
pythongh-126991: Fix reference leak in loading pickle's opcode BUILD (p…
fc39bfb 
…ythonGH-126990)

If PyObject_SetItem() fails in the `load_build()` function of _pickle.c, no DECREF for the `dict` variable.
(cherry picked from commit 29cbcbd)

Co-authored-by: Justin Applegate <[email protected]>
This was referenced Nov 19, 2024
Merged
Merged
serhiy-storchaka added a commit to serhiy-storchaka/cpython that referenced this issue Nov 19, 2024
@serhiy-storchaka
pythongh-126991: Add tests for unpickling bad object state
dd16b0a 
This catches a memory leak in loading the BUILD opcode.
@colesbury colesbury changed the title Missing PyDECREF for load_build in _pickle.c Missing Py_DECREF for load_build in _pickle.c Nov 19, 2024
serhiy-storchaka added a commit to serhiy-storchaka/cpython that referenced this issue Nov 19, 2024
@serhiy-storchaka
pythongh-126991: Add tests for unpickling bad object state
80a8275 
This catches a memory leak in loading the BUILD opcode.
@bedevere-app bedevere-app bot mentioned this issue Nov 19, 2024
Merged
serhiy-storchaka pushed a commit that referenced this issue Nov 19, 2024
@miss-islington @Legoclones
[3.12] gh-126991: Fix reference leak in loading pickle's opcode BUILD (…
153221a 
…GH-126990) (GH-127019)

If PyObject_SetItem() fails in the `load_build()` function of _pickle.c, no DECREF for the `dict` variable.
(cherry picked from commit 29cbcbd)

Co-authored-by: Justin Applegate <[email protected]>
serhiy-storchaka pushed a commit that referenced this issue Nov 19, 2024
@miss-islington @Legoclones
[3.13] gh-126991: Fix reference leak in loading pickle's opcode BUILD (…
bb98a0a 
…GH-126990) (GH-127018)

If PyObject_SetItem() fails in the `load_build()` function of _pickle.c, no DECREF for the `dict` variable.
(cherry picked from commit 29cbcbd)

Co-authored-by: Justin Applegate <[email protected]>
@serhiy-storchaka
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Thank you for your contribution @Legoclones. #127031 adds a test for this leak, as well as coverage tests for other corner cases.

serhiy-storchaka added a commit that referenced this issue Nov 20, 2024
@serhiy-storchaka
gh-126991: Add tests for unpickling bad object state (GH-127031)
addb225 
This catches a memory leak in loading the BUILD opcode.
miss-islington pushed a commit to miss-islington/cpython that referenced this issue Nov 20, 2024
@serhiy-storchaka @miss-islington
pythongh-126991: Add tests for unpickling bad object state (pythonGH-…
f8bb55a 
…127031)

This catches a memory leak in loading the BUILD opcode.
(cherry picked from commit addb225)

Co-authored-by: Serhiy Storchaka <[email protected]>
miss-islington pushed a commit to miss-islington/cpython that referenced this issue Nov 20, 2024
@serhiy-storchaka @miss-islington
pythongh-126991: Add tests for unpickling bad object state (pythonGH-…
60055d0 
…127031)

This catches a memory leak in loading the BUILD opcode.
(cherry picked from commit addb225)

Co-authored-by: Serhiy Storchaka <[email protected]>
This was referenced Nov 20, 2024
Open
Merged
serhiy-storchaka added a commit that referenced this issue Nov 20, 2024
@miss-islington @serhiy-storchaka
[3.12] gh-126991: Add tests for unpickling bad object state (GH-127031)…
b33c37a 
… (GH-127064)

This catches a memory leak in loading the BUILD opcode.
(cherry picked from commit addb225)

Co-authored-by: Serhiy Storchaka <[email protected]>
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