Fedora 43 Releases pyOpenSSL Critical Buffer Overflow Patch Update
fedora
March 27, 2026
Update pyOpenSSL to v26.0.0 (security update) Update python-cryptography to v46.0.5 (dependency of pyOpenSSL 26) Update rust-asn1 to 0.22 (dependency of python-cryptography) Update...
Summary
Wycheproof test vectors.
Update Information:
Update pyOpenSSL to v26.0.0 (security update) Update python-cryptography to v46.0.5 (dependency of pyOpenSSL 26) Update rust-asn1 to 0.22 (dependency of python-cryptography) Update kryoptic to v1.5 (required for rust-asn1 bump to 0.22) The security status of this update is only for pyOpenSSL.
Topics Covered
Change Log
* Mon Jan 26 2026 Jakub Jelen
References
[ 1 ] Bug #2433650 - python-cryptography-46.0.5 is available
https://bugzilla.redhat.com/show_bug.cgi?id=2433650
[ 2 ] Bug #2447727 - pyOpenSSL-26.0.0 is available
https://bugzilla.redhat.com/show_bug.cgi?id=2447727
[ 3 ] Bug #2448652 - CVE-2026-27459 pyOpenSSL: DTLS cookie callback buffer overflow [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2448652
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-9d5b9f45ec' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
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Severity
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Name: rust-wycheproof
Product: Fedora 43
Version: 0.6.0
Release: 1.fc43
Summary: Wycheproof test vectors
Topics Covered
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