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gh-143004: Fix UAF in _collections Counter update fast path #143044

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Merged
serhiy-storchaka merged 8 commits into from
Dec 25, 2025
Merged

gh-143004: Fix UAF in _collections Counter update fast path #143044

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ce88c7e
Fix UAF in _collections Counter update fast path
Kaushalt2004 Dec 21, 2025
e0036f1
Merge branch 'main' into #1
Kaushalt2004 Dec 22, 2025
9ed24b4
gh-143004: Add Counter UAF NEWS entry and benchmark script
Kaushalt2004 Dec 22, 2025
ae5cb7e
fixed after review
Kaushalt2004 Dec 22, 2025
7712af2
Update Misc/NEWS.d/next/Library/2025-12-22-00-00-00.gh-issue-143004.u…
Kaushalt2004 Dec 23, 2025
93a6546
Update Misc/NEWS.d/next/Library/2025-12-22-00-00-00.gh-issue-143004.u…
Kaushalt2004 Dec 23, 2025
49cff07
Simplify Evil class in re-entrant Counter test: remove unnecessary __…
Kaushalt2004 Dec 25, 2025
81d4672
Apply suggestion from @serhiy-storchaka
skirpichev Dec 25, 2025
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2 changes: 1 addition & 1 deletion Misc/NEWS.d/next/Library/2025-12-22-00-00-00.gh-issue-143004.uaf-counter.rst
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@@ -1,2 +1,2 @@
Fix a potential use-after-free in collections.Counter.update() when user code
Fix a potential use-after-free in :meth:`collections.Counter.update` when user code
mutates the Counter during an update. (gh-143004)
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