CVE-2026-74597

CVE-2026-74597 is a memory corruption vulnerability in the Linux kernel's ip6_tunnel (IPv6-in-IPv6 tunneling) subsystem. In ip6ip6_err(), a cloned outer IPv6 ICMP error skb retains the outer packet's inet6_skb_parm in skb->cb after being pulled to the quoted inner packet. If the outer packet c...

CVE-2026-74597 ip6_tunnel: clear skb2->cb[] in ip6ip6_err()

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: clear skb2-cb in ip6ip6err ip6ip6err clones an outer IPv6 ICMP error skb, pulls it to the quoted inner IPv6 packet, and then passes the clone to icmpv6send. The clone still carries the outer packet's inet6skbparm in...

Linux Distros Unpatched Vulnerability : CVE-2026-43038

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: ipv6: icmp: clear skb2-cb in ip6errgenicmpv6unreach Sashiko AI-review observed: In...

Linux Distros Unpatched Vulnerability : CVE-2024-26665

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: tunnels: fix out of bounds access when building IPv6 PMTU error If the ICMPv6 error is built...

CVE-2024-26665

CVE-2024-26665 : Linux kernel vulnerability in tunnel PMTU error handling. When ICMPv6 error is built from a non-linear skb, there is an out-of-bounds/read issue due to using csum_partial. The fix replaces csum_partial with skb_checksum to correctly handle non-linear SKBs during IPv6 PMTU error c...

CVE-2024-26665 tunnels: fix out of bounds access when building IPv6 PMTU error

In the Linux kernel, the following vulnerability has been resolved: tunnels: fix out of bounds access when building IPv6 PMTU error If the ICMPv6 error is built from a non-linear skb we get the following splat, BUG: KASAN: slab-out-of-bounds in docsum+0x220/0x240 Read of size 4 at addr...

Integer overflow

An issue was discovered in Contiki through 3.0. When sending an ICMPv6 error message because of invalid extension header options in an incoming IPv6 packet, there is an attempt to remove the RPL extension headers. Because the packet length and the extension header length are unchecked with respec...