CVE-2026-18727

Description

A flaw was found in open-iscsi's iscsiuio component. This vulnerability involves an integer underflow and out-of-bounds read during Dynamic Host Configuration Protocol for IPv6 (DHCPv6) packet parsing. Specifically, crafted DHCPv6 Advertise traffic with a short User Datagram Protocol (UDP) length can cause the DHCPv6 payload length to underflow. An unauthenticated attacker on an adjacent network segment can exploit this by sending specially crafted IPv6 UDP traffic while the client is in an active DHCPv6 exchange, leading to a denial of service due to a process crash or service disruption.

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Produits concernés

• Red Hat Enterprise Linux 10
• Red Hat Enterprise Linux 9
• Redhat enterprise linux

Scores CVSS

Faiblesses (CWE)

• CWE-191

Références

• https://access.redhat.com/security/cve/CVE-2026-18727 Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2462956 Issue TrackingVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories