CVE-2026-14258

EUVD-2026-40941
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.
Infinite Loop
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
ADJACENT_NETWORK
LOW
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 33.87%
Debian logo
Debian Releases
Debian Product
Codename
dhcpcd
forky
1:10.5.2-1
fixed
sid
1:10.5.2-5
fixed
trixie
1:10.1.0-11+deb13u4
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
dhcpcd
jammy
dne
noble
needs-triage
questing
ignored
resolute
needs-triage
Azure Linux logo
Azure Linux Releases
Azure Package
Release
dhcpcd
Azure Linux 3.0
0:10.0.8-4.azl3
fixed