Linux Kernel Security Vulnerabilities

The Linux kernel version 6.16 contains a security vulnerability. This vulnerability arises from the process of local endpoint learning, where peer-lock is updated in place by reading bind-local. Since the UDP TX field is read without locking, it may lead to address tearing during concurrent IPv6...

Linux Kernel Security Vulnerabilities

The Linux kernel version 6.16 contains security vulnerabilities. These vulnerabilities arise from modifying the bind file that is published via RCU while clearing expired local sources. When reading the path without locking, it is possible to observe torn IPv6 addresses, leading to address...

Linux Kernel Security Vulnerabilities

The Linux kernel version 2.6.12 has a security vulnerability. This vulnerability stems from the function rtmt6check, which allows the configuration of rtinfo-addrnr to 0 when the request address matches certain conditions. This bypasses the loop termination condition in the IP6TRTFSTNSTRICT path...

CVE-2026-102551

Improper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow a remote third-party to influence an endpoint's IPv6 default gateway, on-link prefix, and address configuration via a crafted Router...

CVE-2026-102551 Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP Router Advertisement handling

Improper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow a remote third-party to influence an endpoint's IPv6 default gateway, on-link prefix, and address configuration via a crafted Router...

CVE-2026-102551

Amazon FreeRTOS-Plus-TCP is vulnerable to improper verification of the source of a communication channel in its IPv6 Router Advertisement handler prior to version V4.4.2 . A remote third-party could exploit this by sending a crafted Router Advertisement to influence an endpoint's IPv6 default gat...

CVE-2026-102551 Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP Router Advertisement handling

Improper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow a remote third-party to influence an endpoint's IPv6 default gateway, on-link prefix, and address configuration via a crafted Router...

kernel: ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()

A flaw was found in the Linux kernel's handling of IPv6 extended headers. Specifically, the ipv6hopjumbo function, which processes jumbo payloads, can modify internal packet buffer skb pointers. However, the network header nh pointer is not recomputed after these modifications. This oversight cou...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

kernel: ipv6: exthdrs: refresh nh after handling HAO option

A flaw was found in the Linux kernel's IPv6 extension header processing. When processing the Home Address Option HAO, the cached network header pointer may become invalid if the packet's memory is reallocated. This can lead to incorrect parsing of subsequent IPv6 Type-Length-Value TLV options,...

CVE-2026-89783

A flaw was found in the Linux kernel's IPv6 networking component. An error in handling security path depth could allow an out-of-bounds write. A remote attacker could exploit this by sending specially crafted IPv6 packets, leading to a system crash and causing a Denial of Service DoS. Mitigation...

kernel: ipv6: validate extension header length before copying to cmsg

A flaw was found in the Linux kernel's IPv6 networking stack. An unprivileged local user could exploit a vulnerability in how IPv6 extension header lengths are handled. By manipulating these headers using nftables, an attacker can trigger an out-of-bounds read, leading to information disclosure...

kernel: ipv6: fix use-after-free in ip6_finish_output2()

A flaw was found in the Linux kernel's IPv6 networking stack. A use-after-free vulnerability exists in the ip6finishoutput2 function, where a cached pointer to the IPv6 destination address can become stale after memory reallocation. An attacker could potentially exploit this to leak sensitive...

kernel: ipv6: exthdrs: refresh nh after handling HAO option

A flaw was found in the Linux kernel's IPv6 extension header processing. When processing the Home Address Option HAO, the cached network header pointer may become invalid if the packet's memory is reallocated. This can lead to incorrect parsing of subsequent IPv6 Type-Length-Value TLV options,...

kernel: ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()

A flaw was found in the Linux kernel's handling of IPv6 extended headers. Specifically, the ipv6hopjumbo function, which processes jumbo payloads, can modify internal packet buffer skb pointers. However, the network header nh pointer is not recomputed after these modifications. This oversight cou...

kernel: ipv6: rpl: fix hdrlen overflow in ipv6_rpl_srh_decompress()

A flaw was found in the Linux kernel's IPv6 Routing Protocol for Low-Power and Lossy Networks RPL segment routing header SRH decompression function, ipv6rplsrhdecompress. An integer overflow occurs when processing a specially crafted IPv6 packet, causing the header length calculation to truncate...

Linux kernel addrconf_dad_failure() Buffer Overflow

The vulnerability of the addrconfdadfailure function in the net/ipv6/addrconf.c component of the Linux kernel is related to the implementation of an incorrect control flow. Exploiting this vulnerability could allow a remote attacker to compromise the confidentiality, integrity, and accessibility ...

CVE-2026-102551: Improper Verification of Source of a Communication Channel

Improper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow a remote third-party to influence an endpoint's IPv6 default gateway, on-link prefix, and address configuration via a crafted Router...

PT-2026-115997

Improper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow a remote third-party to influence an endpoint's IPv6 default gateway, on-link prefix, and address configuration via a crafted Router...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-131744)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-131744 advisory. In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: strictly check for maximum number of actions The maximum number of flowtabl...