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{"bugzilla": {"description": "open-iscsi: open-iscsi: DHCPv6 vendor option strlen heap out-of-bounds read and 1-byte write in iscsiuio", "id": "2556266", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2556266"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.3", "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "status": "draft"}, "cwe": "CWE-125", "details": ["A flaw was found in the iscsiuio component of open-iscsi. The DHCPv6 option parser calls strlen() on raw network data without ensuring a NUL terminator is present, causing it to read past the buffer into heap memory. This can result in a daemon crash, a 1-byte heap overwrite, or corruption of the iSCSI initiator name. An attacker on the same network segment can trigger this by sending a crafted DHCPv6 Advertise message."], "mitigation": {"lang": "en:us", "value": "If DHCPv6 is not required for iscsiuio, disable DHCPv6 handling for the relevant network interface. If DHCPv6 is necessary, restrict network exposure to trusted adjacent networks and implement firewall rules to prevent forged DHCPv6 server traffic from reaching clients on shared L2 segments."}, "name": "CVE-2026-115485", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "iscsi-initiator-utils", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "iscsi-initiator-utils", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "iscsi-initiator-utils", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "iscsi-initiator-utils", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "iscsi-initiator-utils", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-10-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-115485\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-115485"], "statement": "This flaw is rated Moderate because exploitation requires adjacent-network access during a narrow timing window (DHCPv6 solicit phase) on a Layer 2 segment where iscsiuio is processing DHCPv6 traffic on a hardware iSCSI offload NIC. Systems without iSCSI offload hardware are not affected. The iscsiuio daemon is socket-activated and only runs when the hardware is present and configured.", "threat_severity": "Moderate"}

{"created": "2026-10-23T03:45:16.528743+00:00", "updated": "2026-10-23T03:45:16.528749+00:00", "vendors": []}