CVE-2026-70458

EUVD-2026-58046
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.2 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 43.27%
Debian logo
Debian Releases
Debian Product
Codename
rsync
bookworm
vulnerable
bookworm (security)
vulnerable
forky
3.5.0+ds1-3
fixed
sid
3.5.0+ds1-3
fixed
trixie
vulnerable
trixie (security)
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
rsync
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
trusty
needs-triage
xenial
needs-triage
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
rsync
RHEL 9
0:3.2.7-1.el9_8
fixed
rsync-daemon
RHEL 9
0:3.2.7-1.el9_8
fixed
rsync-rrsync
RHEL 9
0:3.2.7-1.el9_8
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
rsync
Azure Linux 3.0
0:3.5.0-1.azl3
fixed
Common Weakness Enumeration
References
https://github.com/RsyncProject/rsync/releases/tag/v3.5.0
https://github.com/RsyncProject/rsync/security/advisories/GHSA-gg3m-4m9m-268h
https://www.vulncheck.com/advisories/rsync-out-of-bounds-write-via-flag-hlinked-handling