CVE-2026-70461

NameCVE-2026-70461
Descriptionrsync 3.2.5 before 3.5.0 contains a heap out-of-bounds write vulnerability that allows remote unauthenticated attackers to write one attacker-controlled byte past the end of a heap allocation by supplying a crafted files-from entry. Attackers can trigger the vulnerability against a read-only rsync daemon module by providing a files-from entry containing both an interior and trailing backslash, causing the add_implied_include() function to under-count the trailing backslash when sizing the destination buffer.
SourceCVE (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 PackageReleaseVersionStatus
rsync (PTS)bookworm3.2.7-1+deb12u6vulnerable
bookworm (security)3.2.7-1+deb12u5vulnerable
trixie3.4.1+ds1-5+deb13u4vulnerable
trixie (security)3.4.1+ds1-5+deb13u3vulnerable
forky, sid3.5.0+ds1-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
rsyncsource(unstable)3.5.0+ds1-1

Notes

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

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