CVE-2026-63274

Name	CVE-2026-63274
Description	LibreOffice Draw can import PDF documents. A heap buffer overflow existed when importing a stream object. The length of the stream was taken from the object's own dictionary and was not checked against the number of bytes actually present, so copying the stream read and wrote past the end of the buffer holding it. In fixed versions the declared length is clamped to the bytes actually read.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libreoffice (PTS)	bookworm	4:7.4.7-1+deb12u14	vulnerable
	bookworm (security)	4:7.4.7-1+deb12u13	vulnerable
	trixie	4:25.2.3-2+deb13u6	vulnerable
	trixie (security)	4:25.2.3-2+deb13u5	vulnerable
	forky, sid	4:26.8.0.3-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libreoffice	source	(unstable)	4:26.2.5.2-1

https://www.libreoffice.org/security/#cve-2026-63274