DEBIAN-CVE-2026-45698
Netatalk is a Free and Open Source file server suite for Unix-like operating systems. In versions 3.1.19 through 4.4.2, a stack-based buffer overflow exists in the deletedir() function of Netatalk's afpd daemon due to an integer underflow in the calculation of the remaining buffer size used for path construction. deletedir() is a utility function called when a file operation crosses a device boundary inside an AFP shared volume, which the standard library's renameat() cannot handle. The function attempts to prevent buffer overflows by tracking available space in a size_t remain variable. However, the arithmetic used to compute remain results in an unsigned integer underflow, causing the variable to become SIZE_MAX. Because of this, the subsequent boundary check always evaluates as safe, allowing an unbounded strcpy() operation to copy attacker-controlled filenames into a nearly full stack buffer. Version 4.4.3 patches the issue.
DEBIAN-CVE-2026-45698
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-2026-45698
netatalk
Source reference: /affected/0/package/name
- Affected versions
- 4.2.3~ds-1
Source reference:
/affected/0/versions4.2.3~ds-1+deb13u1Source reference:
/affected/0/versions - Fixed versions
- 4.2.3~ds-1+deb13u2
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
netatalk
Source reference: /affected/1/package/name
- Affected versions
- 4.2.3~ds-1
Source reference:
/affected/1/versions4.2.3~ds-2Source reference:
/affected/1/versions4.2.3~ds-2.1Source reference:
/affected/1/versions4.4.1~ds-1Source reference:
/affected/1/versions4.4.2~ds-1Source reference:
/affected/1/versions - Fixed versions
- 4.4.3~ds-1
Source reference:
/affected/1/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": "4.2.3~ds-1+deb13u2"
}
]
}
],
"package": {
"name": "netatalk",
"purl": "pkg:deb/debian/netatalk?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"4.2.3~ds-1",
"4.2.3~ds-1+deb13u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45698.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.4.3~ds-1"
}
]
}
],
"package": {
"name": "netatalk",
"purl": "pkg:deb/debian/netatalk?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"4.2.3~ds-1",
"4.2.3~ds-2",
"4.2.3~ds-2.1",
"4.4.1~ds-1",
"4.4.2~ds-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45698.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57090 · Revision 1
- Added to Heist Feed
- Publisher date