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Reject float format precision near INT_MAX #158446

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Reject float format precision near INT_MAX#158446
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gpshead
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3.10 (EOL)end of life3.11only security fixesrelease-blockertriagedThe issue has been accepted as valid by a triager.type-securityA security issue

Description

@gpshead
gpshead
opened on Sep 29, 2026

Bug report

I'll fill in details here once public. reserving the GH issue number.

CPython versions tested on:

3.10, 3.15, 3.11, 3.12, CPython main branch, 3.14, 3.13

Operating systems tested on:

No response

Linked PRs

Activity

  1. gpshead
    self-assigned this
    on Sep 29, 2026
  2. gpshead
    added
    type-bugAn unexpected behavior, bug, or error
    type-securityA security issue
    on Sep 29, 2026
  3. StanFromIreland
    added
    triagedThe issue has been accepted as valid by a triager.
    and removed
    type-bugAn unexpected behavior, bug, or error
    on Sep 29, 2026
  4. gpshead
    added 3 commits that reference this issue on Sep 30, 2026

    gh-158446: Reject float format precision near INT_MAX (GH-158474)

    b7b4f3e

    pythongh-158446: Fix the new test_format test on 3.12

    d7e2340

    pythongh-158446: Fix the new test_format test on 3.11

    0d83b86
  5. gpshead
    added
    release-blocker
    on Sep 30, 2026
  6. github-project-automation
    added this to Release and Deferred blockers 🚫on Sep 30, 2026
  7. github-project-automation
    moved this to Todo in Release and Deferred blockers 🚫on Sep 30, 2026
  8. gpshead
    added
    3.11only security fixes
    3.10 (EOL)end of life
    3.12only security fixes
    3.13only security fixes
    3.14bugs and security fixes
    3.15pre-release feature fixes, bugs and security fixes
    on Sep 30, 2026
  9. gpshead
    added a commit that references this issue on Sep 30, 2026

    [3.13] gh-158446: Reject float format precision near INT_MAX (GH-158474…

    824836b
  10. hugovk
    added a commit that references this issue on Sep 30, 2026

    [3.15] gh-158446: Reject float format precision near INT_MAX (GH-158474…

    ab8cecf
  11. gpshead
    added a commit that references this issue on Sep 30, 2026

    [3.14] gh-158446: Reject float format precision near INT_MAX (GH-158474…

    4443885
  12. hugovk
    removed
    3.13only security fixes
    3.14bugs and security fixes
    3.15pre-release feature fixes, bugs and security fixes
    on Sep 30, 2026
  13. sethmlarson
    changed the title [-]placeholder for a security issue[/-] [+]Use-after-free for server-side deallocated SSLContext with sni_callback[/+] on Sep 30, 2026
  14. Yhg1s
    added a commit that references this issue on Sep 30, 2026

    [3.12] gh-158446: Reject float format precision near INT_MAX (GH-158474…

    f30b0d1
  15. hugovk
    removed
    3.12only security fixes
    on Sep 30, 2026
  16. sethmlarson
    changed the title [-]Use-after-free for server-side deallocated SSLContext with sni_callback[/-] [+]Reject float format precision near INT_MAX[/+] on Sep 30, 2026
  17. pablogsal
    added 2 commits that reference this issue on Oct 1, 2026

    [3.10] gh-158446: Reject float format precision near INT_MAX (GH-158474…

    8eb079f

    [3.11] gh-158446: Reject float format precision near INT_MAX (GH-158474…

    889c92b
  18. gpshead
    closed this as completedon Oct 1, 2026
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