CVE-2026-74598

A flaw was found in the Linux kernel's IPv6 networking stack. An off-by-one error in the validation of the Route Information option length RFC 4191 allows a remote attacker to craft a Router Advertisement RA packet. This crafted packet can cause the kernel to read up to 8 bytes beyond the intende...

EUVD-2026-64535

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix Route Information option length validation rt6routercv validates the Route Information option RFC 4191 length against the prefix length, but both checks are off by one. rinfo-length is the ND option length in units of 8...

CVE-2026-12633 Out-of-bounds write in IPv6 6LoWPAN Context Option handling via unauthenticated Router Advertisement

The IPv6 neighbor-discovery code in subsys/net/ip/ipv6nbr.c processes the 6LoWPAN Context Option 6CO, RFC 6775 carried inside ICMPv6 Router Advertisements. In handlera6co the 8-bit contextlen field is taken directly from the packet and was never bounded to the RFC maximum of 128. The function...

CVE-2026-12633

CVE-2026-12633 is an out-of-bounds write in the Zephyr RTOS IPv6 neighbor-discovery code (subsys/net/ip/ipv6_nbr.c). The function handle_ra_6co() processes the 6LoWPAN Context Option (RFC 6775) from ICMPv6 Router Advertisements without bounding the 8-bit context_len field to the RFC maximum of 12...

CVE-2026-16850

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to command injection via crafted Router Advertisements...

EUVD-2026-62745

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to command injection via crafted Router Advertisements...

CVE-2026-16850 Vulnerabilities in IBM AIX and PowerVM VIOS

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to command injection via crafted Router Advertisements...

CVE-2026-16850

IBM AIX 7.2 and 7.3, and PowerVM VIOS 4.1, are vulnerable to command injection via crafted Router Advertisements, enabling remote arbitrary code execution with HIGH severity (CVSS 8.8). Exploitation details are not provided in the documents; refer to the IBM support advisory for patch information.

PT-2026-78611

Name of the Vulnerable Software and Affected Versions IBM AIX versions 7.2 and 7.3 IBM PowerVM VIOS version 4.1 Description A command injection flaw exists that allows a remote attacker to execute arbitrary code by sending specially crafted Router Advertisements. Router Advertisements are ICMPv6...

RLSA-2026:54210 Moderate: dhcpcd security update

The dhcpcd package provides a minimalistic network configuration daemon that supports IPv4 and IPv6 configuration including configuration discovery through NDP, DHCPv4 and DHCPv6 protocols. Security Fixes: dhcpcd: dhcpcd infinite loop and out-of-bounds read via zero-length IPv6 ND option in Route...

dhcpcd security update

An update is available for dhcpcd. This update affects Rocky Linux 10. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The dhcpcd package provides a minimalistic network configuration daemon that...

EUVD-2026-57636

A flaw was found in open-iscsi. This vulnerability allows a remote attacker on the same local network segment to cause a Denial of Service DoS in the iscsiuio daemon. By sending a specially crafted Internet Control Message Protocol version 6 ICMPv6 Router Advertisement with a zero-length option,...

AlmaLinux 10 : dhcpcd (ALSA-2026:54210)

The remote AlmaLinux 10 host has a package installed that is affected by a vulnerability as referenced in the ALSA-2026:54210 advisory. dhcpcd: dhcpcd infinite loop and out-of-bounds read via zero-length IPv6 ND option in Router Advertisement handling CVE-2026-14258 Tenable has extracted the...

RockyLinux 10 : dhcpcd (RLSA-2026:54210)

The remote RockyLinux 10 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:54210 advisory. dhcpcd: dhcpcd infinite loop and out-of-bounds read via zero-length IPv6 ND option in Router Advertisement handling CVE-2026-14258 Tenable has extracted the...

CVE-2026-18726

A flaw was found in open-iscsi. This vulnerability allows a remote attacker on the same local network segment to cause a Denial of Service DoS in the iscsiuio daemon. By sending a specially crafted Internet Control Message Protocol version 6 ICMPv6 Router Advertisement with a zero-length option,...

UBUNTU-CVE-2026-18726

A flaw was found in open-iscsi. This vulnerability allows a remote attacker on the same local network segment to cause a Denial of Service DoS in the iscsiuio daemon. By sending a specially crafted Internet Control Message Protocol version 6 ICMPv6 Router Advertisement with a zero-length option,...

CVE-2026-18726 Open-iscsi: open-iscsi: denial of service in iscsiuio router advertisement parsing

A flaw was found in open-iscsi. This vulnerability allows a remote attacker on the same local network segment to cause a Denial of Service DoS in the iscsiuio daemon. By sending a specially crafted Internet Control Message Protocol version 6 ICMPv6 Router Advertisement with a zero-length option,...

CVE-2026-18726

The CVE-2026-18726 issue affects open-iscsi (iscsiuio daemon). A crafted ICMPv6 Router Advertisement with a zero-length option can cause an infinite loop, leading to sustained CPU usage and DoS on the daemon, impacting system availability. A secondary risk of out-of-bounds reads may occur with a ...

CVE-2026-18726 Open-iscsi: open-iscsi: denial of service in iscsiuio router advertisement parsing

A flaw was found in open-iscsi. This vulnerability allows a remote attacker on the same local network segment to cause a Denial of Service DoS in the iscsiuio daemon. By sending a specially crafted Internet Control Message Protocol version 6 ICMPv6 Router Advertisement with a zero-length option,...

CVE-2026-18726

A flaw was found in open-iscsi. This vulnerability allows a remote attacker on the same local network segment to cause a Denial of Service DoS in the iscsiuio daemon. By sending a specially crafted Internet Control Message Protocol version 6 ICMPv6 Router Advertisement with a zero-length option,...