OVSwrap

OVSwrap CVE-2026-64531 Writeup !WARNING The PoC is provided solely to help defenders, maintainers, and authorized security teams validate patches, mitigations, detections, and exposure on systems they own or are explicitly authorized to test. You are solely responsible for ensuring that your use ...

CVE-2026-64531

CVE-2026-64531 — OVSwrap Linux kernel Open vSwitch module local privilege escalation normal user → root PoC. Exploits the integer wraparound of the 16-bit nlalen field to escalate from a normal user all the way to root. Vulnerability Summary When the nested action stream generated by OVS exceeds...

ovswrap-poc

ovswrap-poc CVE-2026-64531 OVSwrap PoC - Linux kernel Open vSwitch LPE; for patch validation and security research...

kernel: openvswitch: defer tunnel netdev_put to RCU release

A flaw was found in the Linux kernel's Open vSwitch OVS component. A race condition can occur during the destruction of a network device netdev tunnel, where the ovsnetdevtunneldestroy function may attempt to release a device reference while other parts of the system are still actively using it...

kernel: openvswitch: defer tunnel netdev_put to RCU release

A flaw was found in the Linux kernel's Open vSwitch OVS component. A race condition can occur during the destruction of a network device netdev tunnel, where the ovsnetdevtunneldestroy function may attempt to release a device reference while other parts of the system are still actively using it...

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

Detection-and-Mitigation-for-CVE-2022-2639 Description The Open vSwitch kernel module allows flexible userspace control over flow-level packet processing on selected network devices. It can be used to implement a plain Ethernet switch, network device bonding, VLAN processing, network access...

kernel: openvswitch: fix GSO userspace truncation underflow

A flaw was found in the Open vSwitch component of the Linux kernel. This vulnerability arises from an underflow condition when handling Generic Segmentation Offload GSO packets in userspace. A length calculation error can lead to a buffer underflow when data is processed by the skbzerocopy...

Ubuntu 22.04 LTS / 24.04 LTS : Linux kernel vulnerabilities (USN-8643-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8643-1 advisory. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update...

kernel: openvswitch: fix GSO userspace truncation underflow

A flaw was found in the Open vSwitch component of the Linux kernel. This vulnerability arises from an underflow condition when handling Generic Segmentation Offload GSO packets in userspace. A length calculation error can lead to a buffer underflow when data is processed by the skbzerocopy...

CVE-2026-83535

A flaw was found in openstack-network-exporter. When an operator configures user authentication but omits or misconfigures Transport Layer Security TLS, the basic authentication mechanism is silently bypassed. This fail-open design allows an adjacent network attacker to access sensitive Open...

CVE-2026-83535 Openstack-network-exporter: basic-auth uses plaintext password storage and non-constant-time comparison

A flaw was found in openstack-network-exporter. When an operator configures user authentication but omits or misconfigures Transport Layer Security TLS, the basic authentication mechanism is silently bypassed. This fail-open design allows an adjacent network attacker to access sensitive Open...

EUVD-2026-97778

A flaw was found in openstack-network-exporter. When an operator configures user authentication but omits or misconfigures Transport Layer Security TLS, the basic authentication mechanism is silently bypassed. This fail-open design allows an adjacent network attacker to access sensitive Open...

CVE-2026-83535

A flaw was found in openstack-network-exporter. When an operator configures user authentication but omits or misconfigures Transport Layer Security TLS, the basic authentication mechanism is silently bypassed. This fail-open design allows an adjacent network attacker to access sensitive Open...

CVE-2026-83535

A flaw was found in openstack-network-exporter. When an operator configures user authentication but omits or misconfigures Transport Layer Security TLS, the basic authentication mechanism is silently bypassed. This fail-open design allows an adjacent network attacker to access sensitive Open...

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

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,...

OVSwrap-CVE-2026-64531-Mitigation-Tool

OVSwrap CVE-2026-64531 Mitigation Tool A simple script that detects and mitigates the OVSwrap vulnerability affecting Open vSwitch kernel modules. Features Detects vulnerable Open vSwitch modules Determines whether the module is loaded Blocks automatic loading Removes the module safely Verifies...

CVE-2026-98251

A flaw was found in the Linux kernel's Open vSwitch component. When handling network connection tracking conntrack labels, the kernel may reallocate memory for active connections while another processor accesses it simultaneously. This race condition can lead to memory corruption, allowing an...

ROS-20261009-73-0439

The vulnerability of the ovsflowcmdset function in the netopenvswitch/datapath.c module, which is part of the Open vSwitch switchboard for Linux operating systems, involves releasing an incorrect pointer. Exploiting this vulnerability could allow a attacker to cause a service failure...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerabilities have 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 IP...