ovswrap

OVSwrap — Linux kernel Open vSwitch datapath overflow tracking site Source for the OVSwrap patch-status tracker: a single-page site recording which distributions have shipped a fix for the Open vSwitch datapath overflow in the Linux kernel. Where the facts live Everything about the bug — CVE IDs,...

CVE-2026-64531

🔥 CVE-2026-64531 — OVSwrap Linux Kernel Open vSwitch Memory Corruption 🩸 Vulnerability Overview CVE-2026-64531 is a security vulnerability affecting the Linux Kernel Open vSwitch OVS networking subsystem. The flaw exists in the handling of Netlink nested attributes , where oversized action...

OVSwrap-CVE-2026-64531-Mitigation-Tool

OVSwrap CVE-2026-64531 緩和ツール Open vSwitch カーネルモジュールに影響を与える OVSwrap 脆弱性を検出および緩和するシンプルなスクリプトです。 特徴 脆弱な Open vSwitch モジュールの検出 モジュールがロードされているかどうかの判定 自動ロードのブロック モジュールの安全な削除 緩和ステータスの確認 KernelCare 情報の表示 インストール root@kitploit: git clone...

OVSwrap

OVSwrap CVE-2026-64531 Writeup !WARNING 이 PoC는 방어자, 유지보수자, 그리고 권한이 부여된 보안 팀이 자체 소유 또는 명시적으로 테스트 권한을 부여받은 시스템에서 패치, 완화 조치, 탐지 및 노출 범위를 검증하는 데만 도움이 되도록 제공됩니다. 이 자료의 사용이 합법적이고, 권한이 부여되었으며, 통제된 상태에서 격리된 테스트 환경에서 수행되도록 하는 책임은 전적으로 사용자에게 있습니다. !WARNING 이 PoC는 파괴적입니다. 성공 시 라이브 커널 자격 증명credential을 손상시키고,...

CVE-2026-64531

CVE-2026-64531 — OVSwrap PoC di escalation dei privilegi locali utente normale → root nel modulo Open vSwitch del kernel Linux. Sfrutta il wrap-around intero del campo nlalen a 16 bit per passare da utente normale a root. Sintesi della vulnerabilità Quando il flusso di action nidificate generato ...

Detection-and-Mitigation-for-CVE-2022-2639

Detection-and-Mitigation-for-CVE-2022-2639 Descrizione Il modulo kernel Open vSwitch consente un controllo flessibile dallo spazio utente sull'elaborazione dei pacchetti a livello di flusso su dispositivi di rete selezionati. Può essere utilizzato per implementare uno switch Ethernet semplice, il...

ovswrap-poc

ovswrap-poc CVE-2026-64531 OVSwrap PoC - Linux kernel Open vSwitch LPE; per la validazione delle patch e la ricerca sulla sicurezza...

The vulnerability of the validate_set() function in the net_openvswitch/flow_netlink.c module, which supports Open vSwitch routers in Linux operating systems, allows a attacker to compromise the confidentiality and accessibility of protected information.

The vulnerability of the validateset function in the netopenvswitch/flownetlink.c module, which supports Open vSwitch routers in Linux operating systems, relates to the occurrence of operations outside the buffer in memory. Exploiting this vulnerability could allow an attacker to compromise the...

The vulnerability of the `ovs_netdev_tunnelDestroy()` function in the `net/openvswitch/vport-netdev.c` file, which is part of the Open vSwitch router support in the Linux operating system, allows a attacker to compromise the confidentiality, integrity, and accessibility of protected information.

The vulnerability of the ovsnetdevtunnelDestroy function in the net/openvswitch/vport-netdev.c module, which supports Open vSwitch routers in the Linux operating system, is related to the lack of protection for sensitive data. Exploiting this vulnerability could allow an attacker to compromise th...

kernel: net: openvswitch: reject oversized nested action attrs

A flaw was found in Open vSwitch in the Linux kernel. Improper handling of oversized nested action attributes can lead to a truncated length field, which could be exploited by a local attacker to alter kernel memory. This alteration might result in the disclosure of sensitive information or a loc...

kernel: net: openvswitch: reject oversized nested action attrs

A flaw was found in Open vSwitch in the Linux kernel. Improper handling of oversized nested action attributes can lead to a truncated length field, which could be exploited by a local attacker to alter kernel memory. This alteration might result in the disclosure of sensitive information or a loc...

kernel: net: openvswitch: reject oversized nested action attrs

A flaw was found in Open vSwitch in the Linux kernel. Improper handling of oversized nested action attributes can lead to a truncated length field, which could be exploited by a local attacker to alter kernel memory. This alteration might result in the disclosure of sensitive information or a loc...

kernel: net: openvswitch: reject oversized nested action attrs

A flaw was found in Open vSwitch in the Linux kernel. Improper handling of oversized nested action attributes can lead to a truncated length field, which could be exploited by a local attacker to alter kernel memory. This alteration might result in the disclosure of sensitive information or a loc...

CVE-2026-74701

A flaw was found in the Open vSwitch component of the Linux kernel. When a specially crafted packet with ETHPTEB protocol arrives on an ARPHRDNONE device, the keyextract function does not properly verify the Ethernet header length. This oversight allows a remote attacker to trigger a kernel bug,...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: rejecting negative ifindex values Recent changes in net-next commit 759ab1edb56c refactored the handling of pre-assigned ifindex values. This led to a latent issue in ovs. ovs does not validate ifindex values,...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: openvswitch: Fixed an issue where stack out-of-bounds reading occurred when fragmenting IPv4 packets. When running openvswitch on kernels built with KASAN, it is possible to observe the following error during the testing of IPv4...

CVE-2026-74664

A flaw was found in the Linux kernel's Open vSwitch component. When processing flow updates, the ovsflowcmdnew function preallocates a reply buffer based on the request's flow identifier. If a shorter User Flow ID UFID is provided, but the system matches an existing flow with a longer key...

SUSE CVE-2026-74701

In the Linux kernel, the following vulnerability has been resolved: net/openvswitch: check Ethernet header length in keyextract When a packet arrives on an ARPHRDNONE device e.g. TUN, ovsflowkeyextract trusts the user-provided skb-protocol field: if it is ETHPTEB, the packet is classified as...

AZL-97167 CVE-2026-74701 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: net/openvswitch: check Ethernet header length in keyextract When a packet arrives on an ARPHRDNONE device e.g. TUN, ovsflowkeyextract trusts the user-provided skb-protocol field: if it is ETHPTEB, the packet is classified as...

CVE-2026-74701

In the Linux kernel, the following vulnerability has been resolved: net/openvswitch: check Ethernet header length in keyextract When a packet arrives on an ARPHRDNONE device e.g. TUN, ovsflowkeyextract trusts the user-provided skb-protocol field: if it is ETHPTEB, the packet is classified as...