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GeezerVison is showing github.com — gh-159739: Keep SQLite list parameters alive while binding by jelle-openai · Pull Request #160192 · python/cpython

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@jelle-openai

@jelle-openai jelle-openai commented Oct 22, 2026 •
edited by bedevere-app Bot
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When a SQL parameter sequence is an exact list, sqlite3 retrieved an element as a borrowed reference before taking ownership. On free-threaded builds another thread can replace it in between, so binding can use a freed object and crash. Fetch a strong reference atomically. Backport to 3.15 and 3.14.

  • Issue: Fix minor safety issues #159739

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@jelle-openai
pythongh-159739: Keep SQLite list parameters alive while binding
b88ffd4 
When a SQL parameter sequence is an exact list, sqlite3 retrieved an element as a borrowed reference before taking ownership. On free-threaded builds another thread can replace it in between, so binding can use a freed object and crash. Fetch a strong reference atomically. Backport to 3.15 and 3.14.
@jelle-openai
jelle-openai requested a review from erlend-aasland as a code owner October 22, 2026 04:40
@bedevere-app bedevere-app Bot mentioned this pull request Oct 22, 2026
Fix minor safety issues #159739
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@bedevere-app bedevere-app Bot added the awaiting review label Oct 22, 2026
@JelleZijlstra JelleZijlstra added needs backport to 3.14 bugs and security fixes needs backport to 3.15 bugs and security fixes labels Oct 22, 2026
@JelleZijlstra
JelleZijlstra enabled auto-merge (squash) October 22, 2026 21:22
@JelleZijlstra
JelleZijlstra merged commit 4df47d8 into python:main Oct 22, 2026
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@bedevere-app bedevere-app Bot removed the awaiting review label Oct 22, 2026
@miss-islington-app

miss-islington-app Bot commented Oct 22, 2026

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Thanks @jelle-openai for the PR, and @JelleZijlstra for merging it 🌮🎉.. I'm working now to backport this PR to: 3.14, 3.15.
🐍🍒⛏🤖
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@bedevere-app

bedevere-app Bot commented Oct 22, 2026

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GH-160361 is a backport of this pull request to the 3.15 branch.
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@bedevere-app bedevere-app Bot removed the needs backport to 3.15 bugs and security fixes label Oct 22, 2026
@bedevere-app

bedevere-app Bot commented Oct 22, 2026

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GH-160362 is a backport of this pull request to the 3.14 branch.
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@bedevere-app bedevere-app Bot removed the needs backport to 3.14 bugs and security fixes label Oct 22, 2026
JelleZijlstra pushed a commit that referenced this pull request Oct 22, 2026
@miss-islington @jelle-openai
[3.15] gh-159739: Keep SQLite list parameters alive while binding (GH…
7291b84 
…-160192) (#160361)

When a SQL parameter sequence is an exact list, sqlite3 retrieved an element as a borrowed reference before taking ownership. On free-threaded builds another thread can replace it in between, so binding can use a freed object and crash. Fetch a strong reference atomically. Backport to 3.15 and 3.14.
(cherry picked from commit 4df47d8)

Co-authored-by: Jelle Zijlstra <[email protected]>
JelleZijlstra pushed a commit that referenced this pull request Oct 23, 2026
@miss-islington @jelle-openai
[3.14] gh-159739: Keep SQLite list parameters alive while binding (GH…
cd04626 
…-160192) (#160362)

When a SQL parameter sequence is an exact list, sqlite3 retrieved an element as a borrowed reference before taking ownership. On free-threaded builds another thread can replace it in between, so binding can use a freed object and crash. Fetch a strong reference atomically. Backport to 3.15 and 3.14.
(cherry picked from commit 4df47d8)

Co-authored-by: Jelle Zijlstra <[email protected]>
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@erlend-aasland erlend-aasland Awaiting requested review from erlend-aasland erlend-aasland is a code owner

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@jelle-openai @JelleZijlstra
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