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...

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...

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-poc

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

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 ...

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...

The vulnerability in the net_openvswitch/flow_netlink.c module of the Linux operating system allows a hacker to increase their privileges.

The vulnerability of the netopenvswitch/flownetlink.c module in the Linux operating system is related to errors in processing parameter length settings. Exploiting this vulnerability can allow an attacker to increase their privileges...

USN-8643-5: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Network drivers; - Open vSwitch; - SCTP protocol; CVE-2026-53224, CVE-2026-53246, CVE-2026-53247, CVE-2026-64531...

USN-8658-3: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Open vSwitch; - SCTP protocol; CVE-2026-53224, CVE-2026-53246, CVE-2026-64531...

CVE-2022-50999

creationtimestamp| type| source ---|---|--- 2026-08-25 18:56:18+00:00| seen| https://bsky.app/profile/postac001.bsky.social/post/3mtwioadzaj2v 2026-09-02 09:07:06+00:00| seen| https://bsky.app/profile/cyberhub.blog/post/3mujlhzuqxc2l...

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, is related to the occurrence of operations outside the buffer in memory. Exploiting this vulnerability could allow an attacker to compromise th...

The vulnerability of the `ovs_netdev_tunnelDestroy()` function in the `net/openvswitch/vport-netdev.c` module, which supports Open vSwitch routers 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 OpenVSwitch

A flaw was discovered in Open vSwitch, where multiple versions are vulnerable to crafted Geneve packets, which may lead to a denial of service and invalid memory accesses. Triggering this issue requires that hardware offloading via the netlink path is enabled...

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,...