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use-after-free in BufferedReader.readinto() #83691

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phi-gamma mannequin opened this issue Jan 31, 2020 · 5 comments
Closed

use-after-free in BufferedReader.readinto() #83691

phi-gamma mannequin opened this issue Jan 31, 2020 · 5 comments

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@phi-gamma
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Mannequin

phi-gamma mannequin commented Jan 31, 2020

BPO 39510
Nosy @benjaminp, @miss-islington, @phi-gamma
PRs
  • bpo-39510: Fix use-after-free in BufferedReader.readinto() #18295
  • [3.8] closes bpo-39510: Fix use-after-free in BufferedReader.readinto() (GH-18295) #18348
  • [3.7] closes bpo-39510: Fix use-after-free in BufferedReader.readinto() (GH-18295) #18349
  • [3.6] closes bpo-39510: Fix use-after-free in BufferedReader.readinto() (GH-18295) #18350
    		•

    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 = <Date 2020-02-04.21:25:25.467>
created_at = <Date 2020-01-31.15:19:52.093>
labels = []
title = 'use-after-free in BufferedReader.readinto()'
updated_at = <Date 2020-02-04.22:06:49.851>
user = 'https://github.com/phi-gamma'

    bugs.python.org fields:

    activity = <Date 2020-02-04.22:06:49.851>
actor = 'benjamin.peterson'
assignee = 'none'
closed = True
closed_date = <Date 2020-02-04.21:25:25.467>
closer = 'benjamin.peterson'
components = []
creation = <Date 2020-01-31.15:19:52.093>
creator = 'phg'
dependencies = []
files = []
hgrepos = []
issue_num = 39510
keywords = ['patch']
message_count = 5.0
messages = ['361119', '361369', '361372', '361373', '361375']
nosy_count = 3.0
nosy_names = ['benjamin.peterson', 'miss-islington', 'phg']
pr_nums = ['18295', '18348', '18349', '18350']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue39510'
versions = []
    @phi-gamma
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    phi-gamma mannequin commented Jan 31, 2020 

    reader = open ("/dev/zero", "rb")
    _void  = reader.read (42)
    reader.close ()
    reader.readinto (bytearray (42)) ### BANG!

    Bisected to commit dc46945. PR on Github to follow.

    @benjaminp
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    New changeset cb1c074 by Philipp Gesang in branch 'master':
    closes bpo-39510: Fix use-after-free in BufferedReader.readinto() (GH-18295)
    cb1c074

    @miss-islington
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    New changeset 30e7693 by Miss Islington (bot) in branch '3.8':
    closes bpo-39510: Fix use-after-free in BufferedReader.readinto() (GH-18295)
    30e7693

    @miss-islington
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    New changeset 97d2a98 by Miss Islington (bot) in branch '3.7':
    closes bpo-39510: Fix use-after-free in BufferedReader.readinto() (GH-18295)
    97d2a98

    @benjaminp
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    New changeset c352e6c by Miss Islington (bot) in branch '3.6':
    closes bpo-39510: Fix use-after-free in BufferedReader.readinto() (GH-18350)
    c352e6c

    @ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
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    @benjaminp @miss-islington