CVE-2026-70458

Name	CVE-2026-70458
Description	rsync 3.0.0 before 3.5.0 contains an out-of-bounds write vulnerability that allows attackers to corrupt memory by triggering HLINK_BUMP processing on file entries with the FLAG_HLINKED flag set while the hard-link preservation option is inactive. Attackers can exploit the missing F_SUM field in the file_struct layout to access memory past the end of the allocated structure, corrupting adjacent heap or stack data.
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
rsync (PTS)	bookworm	3.2.7-1+deb12u6	vulnerable
	bookworm (security)	3.2.7-1+deb12u5	vulnerable
	trixie	3.4.1+ds1-5+deb13u4	vulnerable
	trixie (security)	3.4.1+ds1-5+deb13u3	vulnerable
	forky, sid	3.5.0+ds1-2	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
rsync	source	(unstable)	3.5.0+ds1-1

https://download.samba.org/pub/rsync/NEWS#3.5.0