SUSE CVE-2026-46037

In the Linux kernel, the following vulnerability has been resolved: ipv4: icmp: validate reply type before using icmppointers Extended echo replies use ICMPEXTECHOREPLY as the outbound reply type. That value is outside the range covered by icmppointers, which only describes the traditional ICMP...

Linux kernel 安全漏洞

The Linux kernel is the kernel used by the Linux operating system developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which arises from the lack of validation when ICMP reply types exceed the range of the icmppointers array, potentially...

PT-2026-39942

Issuing an ICMP ping via the net ping shell command to a device's own IPv4 address causes the network stack to recursively re-enter the input path on the same system work-queue stack. Because the destination is recognized as a local address, both the echo request and the resulting echo reply are...

CVE-2026-43099

The CVE-2026-43099 issue affects the Linux kernel, specifically the IPv4/ICMP path and the IPv6 stub handling. When the IPv6 stack is not active (CONFIG_IPV6=m and not loaded), ipv6_dev_find() may return ERR_PTR(-EAFNOSUPPORT); passing that to dev_hold() can cause a null pointer dereference and a...

Linux Distros Unpatched Vulnerability : CVE-2026-43099

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ipv4: icmp: fix null-ptr-deref in icmpbuildprobe ipv6stub-ipv6devfind may return ERRPTR-EAFNOSUPPORT when the IPv6 stack is not active CONFIGIPV6=m and not...

CVE-2026-43037

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: clear skb2-cb in ip4ip6err Oskar Kjos reported the following problem. ip4ip6err calls icmpsend on a cloned skb whose cb was written by the IPv6 receive path as struct inet6skbparm. icmpsend passes IPCBskb2 to...

CVE-2026-7423 Integer Underflow in ICMP Echo Reply Processing in FreeRTOS-Plus-TCP

Integer underflow in the ICMP and ICMPv6 echo reply handlers in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network user to cause a denial of service device crash when outgoing ping support is enabled, because header sizes are subtracted from a packet length field without...

ovn: ovn: Heap Over-Read in ICMP Error Response Generation - security issue

When generating an ICMP Destination Unreachable or Packet Too Big response, the handler copies a portion of the original packet into the ICMP error body using the IP header's self-declared total length iptotlen for IPv4, ip6plen for IPv6 without validating it against the actual packet buffer size...

Tracing the Chain: Deep Learning for Stepping-Stone Intrusion Detection

Stepping-stone intrusions SSIs are a prevalent network evasion technique in which attackers route sessions through chains of compromised intermediate hosts to obscure their origin. Effective SSI detection requires correlating the incoming and outgoing flows at each relay host at extremely low fal...

CVE-2026-23398 icmp: fix NULL pointer dereference in icmp_tag_validation()

In the Linux kernel, the following vulnerability has been resolved: icmp: fix NULL pointer dereference in icmptagvalidation icmptagvalidation unconditionally dereferences the result of rcudereferenceinetprotosproto without checking for NULL. The inetprotos array is sparse -- only about 15 of 256...

CVE-2026-23381

A flaw was found in the Linux kernel's network bridging component. When Internet Protocol version 6 IPv6 is explicitly disabled, a critical data structure for Neighbor Discovery is not properly initialized. A remote attacker could exploit this by sending a specially crafted Internet Control Messa...

Azure Linux 3.0 Security Update: hyperv-daemons (CVE-2019-10638)

The version of hyperv-daemons installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2019-10638 advisory. - In the Linux kernel before 5.1.7, a device can be tracked by an attacker using the IP ID values the...

CVE-2026-21906

An Improper Handling of Exceptional Conditions vulnerability in the packet forwarding engine PFE of Juniper Networks Junos OS on SRX Series allows an unauthenticated network-based attacker sending a specific ICMP packet through a GRE tunnel to cause the PFE to crash and restart. When PowerMode...

CVE-2026-21906

CVE-2026-21906 overview (Junos OS SRX Series) A vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS on SRX Series can be triggered by a specific ICMP packet routed through a GRE tunnel when PowerMode IPsec (PMI) and GRE performance acceleration are enabled. An unauthe...

Huawei EulerOS: Security Advisory for iputils (EulerOS-SA-2025-1978)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Linux Distros Unpatched Vulnerability : CVE-2017-2671

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The pingunhash function in net/ipv4/ping.c in the Linux kernel through 4.10.8 is too late in obtaining a certain lock and consequently cannot ensure that...

DEBIAN-CVE-2022-49638

In the Linux kernel, the following vulnerability has been resolved: icmp: Fix data-races around sysctl. While reading icmp sysctl variables, they can be changed concurrently. So, we need to add READONCE to avoid data-races...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from an ICMP host relookup in the net subsystem triggering an iprtbug issue...

In the Linux kernel before 5.1.7 a device can be tracked by an attacker using the IP ID values the kernel produces for connection-less protocols (e.g. UDP and ICMP). When such traffic is sent to multiple destination IP addresses it is possible to obtain hash collisions (of indices to the counter array) and thereby obtain the hashing key (via enumeration). An attack may be conducted by hosting a crafted web page that uses WebRTC or gQUIC to force UDP traffic to attacker-controlled IP addresses.

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FreeBSD 安全漏洞

FreeBSD is a set of Unix-like operating systems from the FreeBSD Foundation. A security vulnerability exists in FreeBSD that stems from ICMPv6 packets that bypass firewall rules...