René's URL Explorer Experiment


Title: gh-151818: Fix double-free in _CALL_LIST_APPEND on allocation failure by timurmamedov1 · Pull Request #151826 · python/cpython · GitHub

Open Graph Title: gh-151818: Fix double-free in _CALL_LIST_APPEND on allocation failure by timurmamedov1 · Pull Request #151826 · python/cpython

X Title: gh-151818: Fix double-free in _CALL_LIST_APPEND on allocation failure by timurmamedov1 · Pull Request #151826 · python/cpython

Description: The Python programming language. Contribute to python/cpython development by creating an account on GitHub.

Open Graph Description: _CALL_LIST_APPEND stole the arg stackref via PyStackRef_AsPyObjectSteal and passed it to _PyList_AppendTakeRef. When the list's backing array failed to grow, _PyList_AppendTakeRef decref'd ...

X Description: _CALL_LIST_APPEND stole the arg stackref via PyStackRef_AsPyObjectSteal and passed it to _PyList_AppendTakeRef. When the list's backing array failed to grow, _PyList_AppendTakeRef decref&am...

Opengraph URL: https://github.com/python/cpython/pull/151826

X: @github

direct link

Domain: github.com

route-pattern/_view_fragments/voltron/pull_requests/show/:user_id/:repository/:id/pull_request_layout(.:format)
route-controllervoltron_pull_requests_fragments
route-actionpull_request_layout
fetch-noncev2:87141624-91f3-a3ab-2d97-1e5fb177359a
current-catalog-service-hashae870bc5e265a340912cde392f23dad3671a0a881730ffdadd82f2f57d81641b
request-idB5A4:34B0DF:73DBA6:9A79BC:6A530BC7
html-safe-nonce3548cfd8080b7f0e91f5cb0c34fe9ed07f338ce06e8223f1294226be909bab03
visitor-payloadeyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJCNUE0OjM0QjBERjo3M0RCQTY6OUE3OUJDOjZBNTMwQkM3IiwidmlzaXRvcl9pZCI6IjU2MzY3MDcyNTU2MjM4MTQwODciLCJyZWdpb25fZWRnZSI6ImlhZCIsInJlZ2lvbl9yZW5kZXIiOiJpYWQifQ==
visitor-hmacc363206327fac459bff15c6808f63bfc2ba4d7e56d5d28817cf2d549db7eff0a
hovercard-subject-tagpull_request:3905538501
github-keyboard-shortcutsrepository,pull-request-list,pull-request-conversation,pull-request-files-changed,copilot
google-site-verificationApib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-urlhttps://collector.github.com/github/collect
analytics-location///voltron/pull_requests_fragments/pull_request_layout
fb:app_id1401488693436528
apple-itunes-appapp-id=1477376905, app-argument=https://github.com/_view_fragments/voltron/pull_requests/show/python/cpython/151826/pull_request_layout
twitter:imagehttps://opengraph.githubassets.com/9de624a6e2256224c1932747bf6779e9e8407419a0088511d60eb10fa57f5c4f/python/cpython/pull/151826
twitter:cardsummary_large_image
og:imagehttps://opengraph.githubassets.com/9de624a6e2256224c1932747bf6779e9e8407419a0088511d60eb10fa57f5c4f/python/cpython/pull/151826
og:image:alt_CALL_LIST_APPEND stole the arg stackref via PyStackRef_AsPyObjectSteal and passed it to _PyList_AppendTakeRef. When the list's backing array failed to grow, _PyList_AppendTakeRef decref'd ...
og:image:width1200
og:image:height600
og:site_nameGitHub
og:typeobject
og:author:usernametimurmamedov1
hostnamegithub.com
expected-hostnamegithub.com
Noneb9a586c06a05a7a86fc7e3f4dbd03e42f6869085879aa184aa6369456dbd50fb
turbo-cache-controlno-cache
go-importgithub.com/python/cpython git https://github.com/python/cpython.git
octolytics-dimension-user_id1525981
octolytics-dimension-user_loginpython
octolytics-dimension-repository_id81598961
octolytics-dimension-repository_nwopython/cpython
octolytics-dimension-repository_publictrue
octolytics-dimension-repository_is_forkfalse
octolytics-dimension-repository_network_root_id81598961
octolytics-dimension-repository_network_root_nwopython/cpython
turbo-body-classeslogged-out env-production page-responsive
disable-turbofalse
browser-stats-urlhttps://api.github.com/_private/browser/stats
browser-errors-urlhttps://api.github.com/_private/browser/errors
release07a982c1d40157c619b364352b704c3ce66bb332
ui-targetfull
theme-color#1e2327
color-schemelight dark

Links:

Skip to contenthttps://github.com/python/cpython/pull/151826#start-of-content
https://github.com/
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F151826
GitHub CopilotWrite better code with AIhttps://github.com/features/copilot
GitHub Copilot appDirect agents from issue to mergehttps://github.com/features/ai/github-app
MCP RegistryNewIntegrate external toolshttps://github.com/mcp
ActionsAutomate any workflowhttps://github.com/features/actions
CodespacesInstant dev environmentshttps://github.com/features/codespaces
IssuesPlan and track workhttps://github.com/features/issues
Code ReviewManage code changeshttps://github.com/features/code-review
GitHub Advanced SecurityFind and fix vulnerabilitieshttps://github.com/security/advanced-security
Code securitySecure your code as you buildhttps://github.com/security/advanced-security/code-security
Secret protectionStop leaks before they starthttps://github.com/security/advanced-security/secret-protection
Why GitHubhttps://github.com/why-github
Documentationhttps://docs.github.com
Bloghttps://github.blog
Changeloghttps://github.blog/changelog
Marketplacehttps://github.com/marketplace
View all featureshttps://github.com/features
Enterpriseshttps://github.com/enterprise
Small and medium teamshttps://github.com/team
Startupshttps://github.com/enterprise/startups
Nonprofitshttps://github.com/solutions/industry/nonprofits
App Modernizationhttps://github.com/solutions/use-case/app-modernization
DevSecOpshttps://github.com/solutions/use-case/devsecops
DevOpshttps://github.com/solutions/use-case/devops
CI/CDhttps://github.com/solutions/use-case/ci-cd
View all use caseshttps://github.com/solutions/use-case
Healthcarehttps://github.com/solutions/industry/healthcare
Financial serviceshttps://github.com/solutions/industry/financial-services
Manufacturinghttps://github.com/solutions/industry/manufacturing
Governmenthttps://github.com/solutions/industry/government
View all industrieshttps://github.com/solutions/industry
View all solutionshttps://github.com/solutions
AIhttps://github.com/resources/articles?topic=ai
Software Developmenthttps://github.com/resources/articles?topic=software-development
DevOpshttps://github.com/resources/articles?topic=devops
Securityhttps://github.com/resources/articles?topic=security
View all topicshttps://github.com/resources/articles
Customer storieshttps://github.com/customer-stories
Events & webinarshttps://github.com/resources/events
Ebooks & reportshttps://github.com/resources/whitepapers
Business insightshttps://github.com/solutions/executive-insights
GitHub Skillshttps://skills.github.com
Documentationhttps://docs.github.com
Customer supporthttps://support.github.com
Community forumhttps://github.com/orgs/community/discussions
Trust centerhttps://github.com/trust-center
Partnershttps://github.com/partners
View all resourceshttps://github.com/resources
GitHub SponsorsFund open source developershttps://github.com/open-source/sponsors
Security Labhttps://securitylab.github.com
Maintainer Communityhttps://maintainers.github.com
Acceleratorhttps://github.com/open-source/accelerator
GitHub Starshttps://stars.github.com
Archive Programhttps://archiveprogram.github.com
Topicshttps://github.com/topics
Trendinghttps://github.com/trending
Collectionshttps://github.com/collections
Enterprise platformAI-powered developer platformhttps://github.com/enterprise
GitHub Advanced SecurityEnterprise-grade security featureshttps://github.com/security/advanced-security
Copilot for BusinessEnterprise-grade AI featureshttps://github.com/features/copilot/copilot-business
Premium SupportEnterprise-grade 24/7 supporthttps://github.com/enterprise/premium-support
Pricinghttps://github.com/pricing
Search syntax tipshttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
documentationhttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F151826
Sign up https://github.com/signup?ref_cta=Sign+up&ref_loc=header+logged+out&ref_page=%2F%3Cuser-name%3E%2F%3Crepo-name%3E%2Fvoltron%2Fpull_requests_fragments%2Fpull_request_layout&source=header-repo&source_repo=python%2Fcpython
Reloadhttps://github.com/python/cpython/pull/151826
Reloadhttps://github.com/python/cpython/pull/151826
Reloadhttps://github.com/python/cpython/pull/151826
Please reload this pagehttps://github.com/python/cpython/pull/151826
python https://github.com/python
cpythonhttps://github.com/python/cpython
Please reload this pagehttps://github.com/python/cpython/pull/151826
Notifications https://github.com/login?return_to=%2Fpython%2Fcpython
Fork 35k https://github.com/login?return_to=%2Fpython%2Fcpython
Star 73.8k https://github.com/login?return_to=%2Fpython%2Fcpython
Code https://github.com/python/cpython
Issues 5k+ https://github.com/python/cpython/issues
Pull requests 2.3k https://github.com/python/cpython/pulls
Actions https://github.com/python/cpython/actions
Projects https://github.com/python/cpython/projects
Security and quality 0 https://github.com/python/cpython/security
Insights https://github.com/python/cpython/pulse
Code https://github.com/python/cpython
Issues https://github.com/python/cpython/issues
Pull requests https://github.com/python/cpython/pulls
Actions https://github.com/python/cpython/actions
Projects https://github.com/python/cpython/projects
Security and quality https://github.com/python/cpython/security
Insights https://github.com/python/cpython/pulse
timurmamedov1https://github.com/timurmamedov1
python:mainhttps://github.com/python/cpython/tree/main
timurmamedov1:gh-151818-fix-list-append-double-freehttps://github.com/timurmamedov1/cpython/tree/gh-151818-fix-list-append-double-free
Conversationhttps://github.com/python/cpython/pull/151826
Commits2 (2)https://github.com/python/cpython/pull/151826/commits
Checkshttps://github.com/python/cpython/pull/151826/checks
Files changedhttps://github.com/python/cpython/pull/151826/files
gh-151818: Fix double-free in _CALL_LIST_APPEND on allocation failurehttps://github.com/python/cpython/pull/151826#top
timurmamedov1https://github.com/timurmamedov1
python:mainhttps://github.com/python/cpython/tree/main
timurmamedov1:gh-151818-fix-list-append-double-freehttps://github.com/timurmamedov1/cpython/tree/gh-151818-fix-list-append-double-free
https://github.com/timurmamedov1
timurmamedov1https://github.com/timurmamedov1
Jun 21, 2026https://github.com/python/cpython/pull/151826#issue-4708971694
Please reload this pagehttps://github.com/python/cpython/pull/151826
gh-151119https://github.com/python/cpython/issues/151119
gh-151538https://github.com/python/cpython/pull/151538
@devdanzinhttps://github.com/devdanzin
Double free / use-after-free in list.append() when the list grows under MemoryError (_CALL_LIST_APPEND) #151818https://github.com/python/cpython/issues/151818
Please reload this pagehttps://github.com/python/cpython/pull/151826
https://github.com/timurmamedov1
timurmamedov1https://github.com/timurmamedov1
markshannonhttps://github.com/markshannon
code ownerhttps://github.com/python/cpython/blob/1b9fe5c7226eccc8b269a7443148033080399f43/.github/CODEOWNERS#L225
June 21, 2026 01:39https://github.com/python/cpython/pull/151826#event-27001841826
https://github.com/apps/copilot-pull-request-reviewer
Copilothttps://github.com/apps/copilot-pull-request-reviewer
June 21, 2026 01:39https://github.com/python/cpython/pull/151826#event-27001841890
https://github.com/apps/bedevere-app
bedevere-apphttps://github.com/apps/bedevere-app
awaiting review https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20review%22
Jun 21, 2026https://github.com/python/cpython/pull/151826#event-27001843282
https://github.com/apps/bedevere-app
bedevere-apphttps://github.com/apps/bedevere-app
Jun 21, 2026 https://github.com/python/cpython/pull/151826#ref-issue-4708528195
Double free / use-after-free in list.append() when the list grows under MemoryError (_CALL_LIST_APPEND) #151818 https://github.com/python/cpython/issues/151818
started reviewinghttps://github.com/python/cpython/sessions/6768e660-c2d6-4a8d-a9da-f550d5d6a402
timurmamedov1https://github.com/timurmamedov1
June 21, 2026 01:39https://github.com/python/cpython/pull/151826#event-27001846503
View session https://github.com/python/cpython/sessions/6768e660-c2d6-4a8d-a9da-f550d5d6a402
https://github.com/apps/copilot-pull-request-reviewer
Copilothttps://github.com/apps/copilot-pull-request-reviewer
Jun 21, 2026 https://github.com/python/cpython/pull/151826#pullrequestreview-4539073708
View reviewed changes https://github.com/python/cpython/pull/151826/files
Copilothttps://github.com/apps/copilot-pull-request-reviewer
https://github.com/python/cpython/pull/151826#pullrequestreview-4539073708
Learn morehttps://docs.github.com/articles/managing-disruptive-comments/#hiding-a-comment
Add Copilot custom instructionshttps://github.com/python/cpython/new/main?filename=.github/instructions/*.instructions.md
Learn how to get startedhttps://docs.github.com/en/copilot/customizing-copilot/adding-repository-custom-instructions-for-github-copilot
Please reload this pagehttps://github.com/python/cpython/pull/151826
Python/bytecodes.chttps://github.com/python/cpython/pull/151826/files#diff-729a985b0cb8b431cb291f1edb561bbbfea22e3f8c262451cd83328a0936a342
https://github.com/timurmamedov1
timurmamedov1https://github.com/timurmamedov1
force-pushedhttps://github.com/python/cpython/compare/c9176aefe4736b08a5bf4d73c2d1be8b2076a84c..ca1f525cc9045c9e22eaeb78cfa9c3529c3ab06a
c9176aehttps://github.com/python/cpython/commit/c9176aefe4736b08a5bf4d73c2d1be8b2076a84c
ca1f525https://github.com/python/cpython/commit/ca1f525cc9045c9e22eaeb78cfa9c3529c3ab06a
Compare https://github.com/python/cpython/compare/c9176aefe4736b08a5bf4d73c2d1be8b2076a84c..ca1f525cc9045c9e22eaeb78cfa9c3529c3ab06a
June 21, 2026 16:17https://github.com/python/cpython/pull/151826#event-27011777847
https://github.com/vstinner
vstinnerhttps://github.com/vstinner
Jun 24, 2026 https://github.com/python/cpython/pull/151826#pullrequestreview-4565258911
View reviewed changes https://github.com/python/cpython/pull/151826/files
vstinnerhttps://github.com/vstinner
https://github.com/python/cpython/pull/151826#pullrequestreview-4565258911
Learn morehttps://docs.github.com/articles/managing-disruptive-comments/#hiding-a-comment
#152114https://github.com/python/cpython/pull/152114
Please reload this pagehttps://github.com/python/cpython/pull/151826
timurmamedov1https://github.com/timurmamedov1
June 24, 2026 15:59https://github.com/python/cpython/pull/151826#commits-pushed-1df2ec4
https://github.com/timurmamedov1
pythongh-151818https://github.com/python/cpython/issues/151818
: Fix double-free in _CALL_LIST_APPEND on allocation f…https://github.com/python/cpython/pull/151826/commits/1df2ec4dd541e2cf7a957b1c75afe2719ca79de8
1df2ec4https://github.com/python/cpython/pull/151826/commits/1df2ec4dd541e2cf7a957b1c75afe2719ca79de8
https://github.com/timurmamedov1
Fix NEWS entry: use literal markup for internal opcode namehttps://github.com/python/cpython/pull/151826/commits/aa69c52e434525dcd10a422ba7dc682100dbff2b
aa69c52https://github.com/python/cpython/pull/151826/commits/aa69c52e434525dcd10a422ba7dc682100dbff2b
https://github.com/timurmamedov1
timurmamedov1https://github.com/timurmamedov1
force-pushedhttps://github.com/python/cpython/compare/c63498d7f9c92f6748fffdbe991974b8dfb5b53c..aa69c52e434525dcd10a422ba7dc682100dbff2b
c63498dhttps://github.com/python/cpython/commit/c63498d7f9c92f6748fffdbe991974b8dfb5b53c
aa69c52https://github.com/python/cpython/commit/aa69c52e434525dcd10a422ba7dc682100dbff2b
Compare https://github.com/python/cpython/compare/c63498d7f9c92f6748fffdbe991974b8dfb5b53c..aa69c52e434525dcd10a422ba7dc682100dbff2b
June 24, 2026 20:00https://github.com/python/cpython/pull/151826#event-27163264423
https://github.com/tonghuaroot
tonghuaroothttps://github.com/tonghuaroot
Jun 25, 2026 https://github.com/python/cpython/pull/151826#ref-issue-4704484084
CPython crashes on memory-allocation failure (OOM): 35 findings (4 dups → 31 distinct) #151763 https://github.com/python/cpython/issues/151763
https://github.co/hiddenchars
https://github.com/python/cpython/pull/{{ revealButtonHref }}
Sign up for freehttps://github.com/join?source=comment-repo
Sign in to commenthttps://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F151826
https://github.com/vstinner
vstinner https://github.com/vstinner
https://github.com/python/cpython/pull/151826/files/9a54e4149ca500e19db76c88d5f9bf655d40b2bf
Copilot code review https://github.com/apps/copilot-pull-request-reviewer
Copilot https://github.com/apps/copilot-pull-request-reviewer
https://github.com/python/cpython/pull/151826/files/438be07a763fffd689731fb8fbe394ca9760e905
https://github.com/markshannon
markshannon https://github.com/markshannon
awaiting review https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20review%22
Please reload this pagehttps://github.com/python/cpython/pull/151826
https://github.com/timurmamedov1
https://github.com/vstinner
https://github.com/apps/copilot-pull-request-reviewer
https://github.com
Termshttps://docs.github.com/site-policy/github-terms/github-terms-of-service
Privacyhttps://docs.github.com/site-policy/privacy-policies/github-privacy-statement
Securityhttps://github.com/security
Statushttps://www.githubstatus.com/
Communityhttps://github.community/
Docshttps://docs.github.com/
Contacthttps://support.github.com?tags=dotcom-footer

Viewport: width=device-width

URLs of crawlers that visited me.