UBUNTU-CVE-2026-14258
A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to enter a non-advancing loop. Successful exploitation may result in excessive CPU consumption, leading to a denial of service.
UBUNTU-CVE-2026-14258
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:UBUNTU-CVE-2026-14258
dhcpcd
Source reference: /affected/0/package/name
- Affected versions
- 1:10.0.2-3ubuntu3
Source reference:
/affected/0/versions1:10.0.5-1Source reference:
/affected/0/versions1:10.0.5-2Source reference:
/affected/0/versions1:10.0.5-3Source reference:
/affected/0/versions1:10.0.5-4Source reference:
/affected/0/versions1:10.0.5-5Source reference:
/affected/0/versions1:10.0.6-1Source reference:
/affected/0/versions1:10.0.6-1ubuntu1Source reference:
/affected/0/versions1:10.0.6-1ubuntu2Source reference:
/affected/0/versions1:10.0.6-1ubuntu3Source reference:
/affected/0/versions1:10.0.6-1ubuntu3.1Source reference:
/affected/0/versions1:10.0.6-1ubuntu3.2Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
dhcpcd
Source reference: /affected/1/package/name
- Affected versions
- 1:10.1.0-8
Source reference:
/affected/1/versions1:10.1.0-10Source reference:
/affected/1/versions1:10.1.0-11Source reference:
/affected/1/versions1:10.1.0-12Source reference:
/affected/1/versions1:10.2.4-3Source reference:
/affected/1/versions1:10.2.4-4Source reference:
/affected/1/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": "dhcpcd",
"purl": "pkg:deb/ubuntu/dhcpcd?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"1:10.0.2-3ubuntu3",
"1:10.0.5-1",
"1:10.0.5-2",
"1:10.0.5-3",
"1:10.0.5-4",
"1:10.0.5-5",
"1:10.0.6-1",
"1:10.0.6-1ubuntu1",
"1:10.0.6-1ubuntu2",
"1:10.0.6-1ubuntu3",
"1:10.0.6-1ubuntu3.1",
"1:10.0.6-1ubuntu3.2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14258.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "dhcpcd",
"binary_version": "1:10.0.6-1ubuntu3.2"
},
{
"binary_name": "dhcpcd-base",
"binary_version": "1:10.0.6-1ubuntu3.2"
},
{
"binary_name": "dhcpcd5",
"binary_version": "1:10.0.6-1ubuntu3.2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "dhcpcd",
"purl": "pkg:deb/ubuntu/dhcpcd?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"1:10.1.0-8",
"1:10.1.0-10",
"1:10.1.0-11",
"1:10.1.0-12",
"1:10.2.4-3",
"1:10.2.4-4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14258.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "dhcpcd",
"binary_version": "1:10.2.4-4"
},
{
"binary_name": "dhcpcd-base",
"binary_version": "1:10.2.4-4"
},
{
"binary_name": "dhcpcd5",
"binary_version": "1:10.2.4-4"
}
]
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #14634 · Revision 1
- Added to Heist Feed
- Publisher date