DEBIAN-CVE-2026-65610
nnn stores homelen variable as uchar_t, which can only represent values in the range 0-255. An attacker who can influence the victim's execution environment can provide an arbitrary HOME path with length that is truncated to 0. The expression (homelen - 1) is promoted to signed int and becomes -1 and producing an out-of-bounds read and an out-of-bounds write one byte before the path buffer. Maintainer of this project was notified about this vulnerability. It might has been addressed, but the maintainer did not provide a vulnerable version range. Only version 5.2 was tested and confirmed as vulnerable.
DEBIAN-CVE-2026-65610
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-2026-65610
nnn
Source reference: /affected/0/package/name
- Affected versions
- 4.7-1
Source reference:
/affected/0/versions4.8-1Source reference:
/affected/0/versions4.9-1Source reference:
/affected/0/versions5.0-1Source reference:
/affected/0/versions5.1-1Source reference:
/affected/0/versions5.2-1Source reference:
/affected/0/versions5.3-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
nnn
Source reference: /affected/1/package/name
- Affected versions
- 5.0-1
Source reference:
/affected/1/versions5.1-1Source reference:
/affected/1/versions5.2-1Source reference:
/affected/1/versions5.3-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
nnn
Source reference: /affected/2/package/name
- Affected versions
- 5.0-1
Source reference:
/affected/2/versions5.1-1Source reference:
/affected/2/versions5.2-1Source reference:
/affected/2/versions5.3-1Source reference:
/affected/2/versions - Fixed versions
- Not stated in this record
- 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"
}
]
}
],
"package": {
"name": "nnn",
"purl": "pkg:deb/debian/nnn?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"4.7-1",
"4.8-1",
"4.9-1",
"5.0-1",
"5.1-1",
"5.2-1",
"5.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65610.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "nnn",
"purl": "pkg:deb/debian/nnn?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"5.0-1",
"5.1-1",
"5.2-1",
"5.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65610.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "nnn",
"purl": "pkg:deb/debian/nnn?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"5.0-1",
"5.1-1",
"5.2-1",
"5.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65610.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58155 · Revision 1
- Added to Heist Feed
- Publisher date