Fedora 43: Critical Stack Overflow Fix for mingw-libtasn1 DoS Vulnerability
fedora
January 22, 2026
Update to 4.21.0, fixes CVE-2025-13151.
Summary
libtasn1 is the ASN.1 library used in GNUTLS.
This package contains the MinGW Windows cross compiled libtasn1 library.
Update Information:
Update to 4.21.0, fixes CVE-2025-13151.
Topics Covered
Change Log
* Tue Jan 13 2026 Sandro Mani
References
[ 1 ] Bug #2427834 - CVE-2025-13151 mingw-libtasn1: libtasn1: Denial of Service via stack-based buffer overflow in asn1_expend_octet_string [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2427834
[ 2 ] Bug #2427836 - CVE-2025-13151 mingw-libtasn1: libtasn1: Denial of Service via stack-based buffer overflow in asn1_expend_octet_string [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2427836
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-0dfbd2a5e2' 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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Name: mingw-libtasn1
Product: Fedora 43
Version: 4.21.0
Release: 1.fc43
Summary: MinGW Windows libtasn1 library
Topics Covered
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