Skip to content

CVE-2026-56116 on Cyberus Linux 26.05

Aliases: CVE-2026-56116

Packages: dhcpcd

Status: Plausible

Advisory Information

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.

Updates

2026-09-21 20:32 CEST

Metadata changes:

  • Status for package dhcpcd: “Plausible”

2026-09-21 17:05 CEST

Metadata changes:

  • Status for package dhcpcd: “New”