CVE-2026-7656

The CVE affects Zephyr’s IPv6 Neighbor Discovery in subsys/net/ip/ipv6_nbr.c (handle_ra_input/handle_ns_input/handle_na_input). A faulty boolean combining ND validity checks with ICMPv6 code allowed any ND message with code 0 to bypass Hop Limit==255 and multicast/RS/RA validation, enabling forge...

CVE-2026-56116

A flaw was found in dhcpcd. An unauthenticated attacker on the same network link can exploit a memory leak vulnerability in the IPv6 Router Advertisement route information handling. By repeatedly sending specially crafted Router Advertisements with a zero lifetime, the attacker can cause the syst...

CVE-2026-56116

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...

CVE-2026-56116

CVE-2026-56116 affects dhcpcd up to version 10.3.2. The vulnerability is in the IPv6 Router Advertisement route information handling, where a memory leak can be triggered by an unauthenticated, same-link attacker sending crafted Router Advertisements. Specifically, Router Advertisements containin...

CVE-2026-56116 dhcpcd Memory Leak DoS via IPv6 Router Advertisement Handling

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...

ALPINE-CVE-2026-48715

radvd is a router advertisement daemon for IPv6. Prior to version 2.21, the radvdump utility shipped with radvd contains a stack buffer overflow in the Route Information option parser. When processing a crafted ICMPv6 Router Advertisement, printff copies up to 2032 bytes from attacker-controlled...

CVE-2026-48715

radvd is a router advertisement daemon for IPv6. Prior to version 2.21, the radvdump utility shipped with radvd contains a stack buffer overflow in the Route Information option parser. When processing a crafted ICMPv6 Router Advertisement, printff copies up to 2032 bytes from attacker-controlled...

SUSE CVE-2026-43040

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: ndisc: fix ndiscrauseropt to initialize nduseroptpadX fields to zero to prevent an info-leak When processing Router Advertisements with user options the kernel builds an RTMNEWNDUSEROPT netlink message. The nduseroptms...

RHCOS 4 : OpenShift Container Platform 4.3.25 containernetworking-plugins (RHSA-2020:2443)

The remote Red Hat Enterprise Linux CoreOS 4 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2020:2443 advisory. - containernetworking/plugins: IPv6 router advertisements allow for MitM attacks on IPv4 clusters CVE-2020-10749 Note that Nessus has not...

RHCOS 4 : OpenShift Container Platform 4.2.36 containernetworking-plugins (RHSA-2020:2592)

The remote Red Hat Enterprise Linux CoreOS 4 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2020:2592 advisory. - containernetworking/plugins: IPv6 router advertisements allow for MitM attacks on IPv4 clusters CVE-2020-10749 Note that Nessus has not...

RHCOS 4 : OpenShift Container Platform 4.4.8 containernetworking-plugins (RHSA-2020:2403)

The remote Red Hat Enterprise Linux CoreOS 4 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2020:2403 advisory. - containernetworking/plugins: IPv6 router advertisements allow for MitM attacks on IPv4 clusters CVE-2020-10749 Note that Nessus has not...

Linux Distros Unpatched Vulnerability : CVE-2026-43040

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net: ipv6: ndisc: fix ndiscrauseropt to initialize nduseroptpadX fields to zero to prevent an info-leak When processing Router Advertisements with user options...

CVE-2026-43040

A flaw was found in the Linux kernel. When processing Router Advertisements with user options, the nduseroptmsg structure's padding fields are not properly zeroed. This oversight can lead to an information leak, potentially exposing sensitive kernel data. A remote attacker could exploit this to...

CVE-2026-43040

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: ndisc: fix ndiscrauseropt to initialize nduseroptpadX fields to zero to prevent an info-leak When processing Router Advertisements with user options the kernel builds an RTMNEWNDUSEROPT netlink message. The nduseroptms...

CVE-2026-43040 net: ipv6: ndisc: fix ndisc_ra_useropt to initialize nduseropt_padX fields to zero to prevent an info-leak

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: ndisc: fix ndiscrauseropt to initialize nduseroptpadX fields to zero to prevent an info-leak When processing Router Advertisements with user options the kernel builds an RTMNEWNDUSEROPT netlink message. The nduseroptms...

CVE-2026-43040

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: ndisc: fix ndiscrauseropt to initialize nduseroptpadX fields to zero to prevent an info-leak When processing Router Advertisements with user options the kernel builds an RTMNEWNDUSEROPT netlink message. The nduseroptms...

EUVD-2026-26639

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: ndisc: fix ndiscrauseropt to initialize nduseroptpadX fields to zero to prevent an info-leak When processing Router Advertisements with user options the kernel builds an RTMNEWNDUSEROPT netlink message. The nduseroptms...

CVE-2026-43040

CVE-2026-43040 corresponds to a Linux kernel issue in IPv6 Router Advertisements handling via nduseropt, where three padding fields in nduseroptmsg were not initialized to zero, leaking kernel data. Affected component: net/ipv6/ndisc (ndc ra user options). Root cause: padding fields were not zero...

CVE-2026-43040

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: ndisc: fix ndiscrauseropt to initialize nduseroptpadX fields to zero to prevent an info-leak When processing Router Advertisements with user options the kernel builds an RTMNEWNDUSEROPT netlink message. The nduseroptms...

EUVD-2026-26284

Insufficient validation of the prefix length field in IPv6 Router Advertisement processing in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to cause memory corruption by sending a crafted Router Advertisement with a prefix length value exceeding the maximum valid...