UAF when writing to a bytearray with an element implementing __index__ with side-effects #91153
Description
| BPO | 46997 |
|---|---|
| Nosy | @gvanrossum, @JelleZijlstra |
Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.
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GitHub fields:
assignee = None
closed_at = None
created_at = <Date 2022-03-13.02:05:03.024>
labels = ['interpreter-core', '3.9', '3.10', '3.11']
title = 'Invalid memory write in bytearray'
updated_at = <Date 2022-03-13.02:14:01.825>
user = 'https://github.com/JelleZijlstra'bugs.python.org fields:
activity = <Date 2022-03-13.02:14:01.825>
actor = 'JelleZijlstra'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Interpreter Core']
creation = <Date 2022-03-13.02:05:03.024>
creator = 'JelleZijlstra'
dependencies = []
files = []
hgrepos = []
issue_num = 46997
keywords = []
message_count = 2.0
messages = ['415021', '415022']
nosy_count = 2.0
nosy_names = ['gvanrossum', 'JelleZijlstra']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue46997'
versions = ['Python 3.9', 'Python 3.10', 'Python 3.11']Linked PRs
- gh-91153: Fix bytearray holding a reference to its internal buffer when calling into potentially mutating __index__ methods #132379
- [3.14] gh-91153: prevent a crash in
bytearray.__setitem__(ind, ...)whenind.__index__has side-effects (GH-132379) #136581 - [3.13] gh-91153: prevent a crash in
bytearray.__setitem__(ind, ...)whenind.__index__has side-effects (GH-132379) #136582