Description

dhcpcd through 10.3.2, fixed in commit 708b4a5, contains a memory leak vulnerability in the IPv6 Router Advertisement route information handling that allows an unauthenticated same-link attacker to cause denial of service by sending crafted Router Advertisements. Attackers can repeatedly send Router Advertisements containing Route Information options with a lifetime of zero, triggering unfreed allocations in routeinfo_findalloc() that cause linear memory exhaustion and eventual daemon crash.

Severity (CVSS)

Base score7.1
SeverityHigh
VersionCVSS 4.0
VectorCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Provided byCNA

Weaknesses

  • CWE-401 — Missing Release of Memory after Effective Lifetime

Affected products

VendorProductVersions
NetworkConfigurationdhcpcd0 to <=10.3.2; 708b4a56bae080a5b18c2e0c4c6fbe103131a2b0

References

Authoritative sources

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Generated from the official CVE List on 24 Jun 2026 09:35 UTC.