[3.13] gh-135034: Normalize link targets in tarfile, add os.path.realpath(strict='allow_missing')
(GH-135037)
#135064
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Addresses CVEs 2024-12718, 2025-4138, 2025-4330, and 2025-4517.
(cherry picked from commit 3612d8f)
Co-authored-by: Łukasz Langa lukasz@langa.pl
Co-authored-by: Petr Viktorin encukou@gmail.com
Co-authored-by: Seth Michael Larson seth@python.org
Co-authored-by: Adam Turner 9087854+AA-Turner@users.noreply.github.com
Co-authored-by: Serhiy Storchaka storchaka@gmail.com
filter="tar"
/filter="data"
) #135034📚 Documentation preview 📚: https://cpython-previews--135064.org.readthedocs.build/