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Debian Oldstable LibreOffice Important Buffer Overflow Vuln DSA-6251-1

Dun Anh Nguyen discovered a buffer overflow in LibreOffice, which could result in an out-of-bounds write if OOXML documents with malformed encryption parameters are opened. For the oldstable distribution (bookworm), this problem has been fixed in version 4:7.4.7-1+deb12u11.. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6251-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/security/ Moritz Muehlenhoff May 07, 2026 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : libreoffice CVE ID : CVE-2026-4430 Dun Anh Nguyen discovered a buffer overflow in LibreOffice, which could result in an out-of-bounds write if OOXML documents with malformed encryption parameters are opened. For the oldstable distribution (bookworm), this problem has been fixed in version 4:7.4.7-1+deb12u11. For the stable distribution (trixie), this problem has been fixed in version 4:25.2.3-2+deb13u4. We recommend that you upgrade your libreoffice packages. For the detailed security status of libreoffice please refer to its security tracker page at: https://security-tracker.debian.org/tracker/libreoffice Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it. . Buffer overflow in LibreOffice fixed in Debian oldstable and stable releases. Upgrade recommended to avoid exploits.. Debian LibreOffice Security Buffer Overflow Malformed Encryption. . Severity: Important. LinuxSecurity.com Team

May 07, 2026 •Important Debian