CVE-2026-23003 ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv()

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: use skbvlaninetprepare in ip6tnlrcv Blamed commit did not take care of VLAN encapsulations as spotted by syzbot 1. Use skbvlaninetprepare instead of pskbinetmaypull. 1 BUG: KMSAN: uninit-value in INETECNdecapsulate...

CVE-2026-23003

CVE-2026-23003 : In the Linux kernel’s IPv6 tunnel receive path (ip6_tunnel, __ip6_tnl_rcv), VLAN encapsulations were not handled correctly due to a failed VLAN-aware pull in the decapsulation path. The fix substitutes skb_vlan_inet_prepare() for pskb_inet_may_pull() to properly accommodate VLAN-...

CVE-2026-23003

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: use skbvlaninetprepare in ip6tnlrcv Blamed commit did not take care of VLAN encapsulations as spotted by syzbot 1. Use skbvlaninetprepare instead of pskbinetmaypull. 1 BUG: KMSAN: uninit-value in INETECNdecapsulate...

EUVD-2026-4621

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: use skbvlaninetprepare in ip6tnlrcv Blamed commit did not take care of VLAN encapsulations as spotted by syzbot 1. Use skbvlaninetprepare instead of pskbinetmaypull. 1 BUG: KMSAN: uninit-value in INETECNdecapsulate...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-004458)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004458 advisory. In ip6xmit of ip6output.c, there is a possible out of bounds write due to a use after free. This could lead to local escalation of privilege with System execution...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001890)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001890 advisory. The ip6routeadd function in net/ipv6/route.c in the Linux kernel through 3.13.6 does not properly count the addition of routes, which allows remote attackers to caus...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-002324)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002324 advisory. The ip6appenddatamtu function in net/ipv6/ip6output.c in the IPv6 implementation in the Linux kernel through 3.10.3 does not properly maintain information about...

SUSE CVE-2025-71098

In the Linux kernel, the following vulnerability has been resolved: ip6gre: make ip6greheader robust Over the years, syzbot found many ways to crash the kernel in ip6greheader 1. This involves team or bonding drivers ability to dynamically change their dev-neededheadroom and/or dev-hardheaderlen ...

CVE-2025-71098

In the Linux kernel, the following vulnerability has been resolved: ip6gre: make ip6greheader robust Over the years, syzbot found many ways to crash the kernel in ip6greheader 1. This involves team or bonding drivers ability to dynamically change their dev-neededheadroom and/or dev-hardheaderlen ...

Important: kernel-livepatch-6.12.53-69.119

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: net/ip6tunnel: Prevent perpetual tunnel growth CVE-2025-40173 Affected Packages: kernel-livepatch-6.12.53-69.119 Issue Correction: Please ensure you have live patching enabled. Run dnf update...

Important: kernel-livepatch-6.1.155-176.282

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: net/ip6tunnel: Prevent perpetual tunnel growth CVE-2025-40173 Affected Packages: kernel-livepatch-6.1.155-176.282 Issue Correction: Please ensure you have live patching enabled. Run dnf update...

Important: kernel-livepatch-5.10.245-241.976

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: net/ip6tunnel: Prevent perpetual tunnel growth CVE-2025-40173 Affected Packages: kernel-livepatch-5.10.245-241.976 Issue Correction: Please ensure you have live patching enabled. Run yum update...

CVE-2023-54265

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix an uninit variable access bug in ip6makeskb Syzbot reported a bug as following: ===================================================== BUG: KMSAN: uninit-value in archatomic64inc arch/x86/include/asm/atomic6464.h:88 inli...

Linux Distros Unpatched Vulnerability : CVE-2023-54265

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ipv6: Fix an uninit variable access bug in ip6makeskb Syzbot reported a bug as following: ===================================================== BUG: KMSAN:...

CVE-2023-54265

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix an uninit variable access bug in ip6makeskb Syzbot reported a bug as following: ===================================================== BUG: KMSAN: uninit-value in archatomic64inc arch/x86/include/asm/atomic6464.h:88 inli...

CVE-2023-54265

CVE-2023-54265 affects the Linux kernel: an uninit variable access in __ip6_make_skb() can occur when icmp6hdr is not in the skb’s linear region (notably with SOCK_RAW); the fix uses a local icmp6_type to carry the correct value across scenarios. Public advisories from multiple vendors (Red Hat, ...

Oracle Linux 8 / 9 : Unbreakable Enterprise kernel (ELSA-2025-28048)

The remote Oracle Linux 8 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-28048 advisory. - netfilter: nftables: reject duplicate device on updates Pablo Neira Ayuso Orabug: 38744086 CVE-2025-38678 - PCI: rcar: Demote WARN to...

Moderate: Red Hat Security Advisory: kernel-rt security update

An update for kernel-rt is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available f...

Linux Distros Unpatched Vulnerability : CVE-2023-53821

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ip6vti: fix slab-use-after-free in decodesession6 When ipv6vti device is set to the qdisc of the sfb type, the cb field of the sent skb may be modified during...

Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2025-1297)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1297 advisory. In the Linux kernel, the following vulnerability has been resolved: crypto: essiv - Check ssize for decryption and in-place encryption CVE-2025-40019 In the Linux kernel, the following...