DEBIAN-CVE-2026-29518
Rsync versions before 3.4.3 contain a time-of-check to time-of-use (TOCTOU) race condition in daemon file handling that allows attackers to redirect file writes outside intended directories by replacing parent directory components with symbolic links. Attackers with write access to a module path can exploit this race condition to create or overwrite arbitrary files, potentially modifying sensitive system files and achieving privilege escalation when the daemon runs with elevated privileges. This vulnerability can only be triggered if the chroot setting is false.
DEBIAN-CVE-2026-29518
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-29518
rsync
Source reference: /affected/0/package/name
- Affected versions
- 3.2.7-1
Source reference:
/affected/0/versions3.2.7-1+deb12u1Source reference:
/affected/0/versions3.2.7-1+deb12u2Source reference:
/affected/0/versions3.2.7-1+deb12u3Source reference:
/affected/0/versions3.2.7-1+deb12u4Source reference:
/affected/0/versions - Fixed versions
- 3.2.7-1+deb12u5
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
rsync
Source reference: /affected/1/package/name
- Affected versions
- 3.4.1+ds1-5
Source reference:
/affected/1/versions3.4.1+ds1-5+deb13u1Source reference:
/affected/1/versions3.4.1+ds1-5+deb13u2Source reference:
/affected/1/versions - Fixed versions
- 3.4.1+ds1-5+deb13u3
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
rsync
Source reference: /affected/2/package/name
- Affected versions
- 3.4.1+ds1-5
Source reference:
/affected/2/versions3.4.1+ds1-6Source reference:
/affected/2/versions3.4.1+ds1-7Source reference:
/affected/2/versions3.4.1+ds1-8~exp1Source reference:
/affected/2/versions3.4.2+ds1-1Source reference:
/affected/2/versions3.4.2+ds1-2Source reference:
/affected/2/versions - Fixed versions
- 3.4.3+ds1-1
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.2.7-1+deb12u5"
}
]
}
],
"package": {
"name": "rsync",
"purl": "pkg:deb/debian/rsync?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"3.2.7-1",
"3.2.7-1+deb12u1",
"3.2.7-1+deb12u2",
"3.2.7-1+deb12u3",
"3.2.7-1+deb12u4"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-29518.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4.1+ds1-5+deb13u3"
}
]
}
],
"package": {
"name": "rsync",
"purl": "pkg:deb/debian/rsync?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"3.4.1+ds1-5",
"3.4.1+ds1-5+deb13u1",
"3.4.1+ds1-5+deb13u2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-29518.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4.3+ds1-1"
}
]
}
],
"package": {
"name": "rsync",
"purl": "pkg:deb/debian/rsync?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"3.4.1+ds1-5",
"3.4.1+ds1-6",
"3.4.1+ds1-7",
"3.4.1+ds1-8~exp1",
"3.4.2+ds1-1",
"3.4.2+ds1-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-29518.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57485 · Revision 1
- Added to Heist Feed
- Publisher date