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...

New OVSwrap Linux Kernel Flaw Lets Local Users Gain Root via Open vSwitch

A memory corruption flaw in the Linux kernel's Open vSwitch datapath gives ordinary local users a path to root on a broad set of default-configured distributions, and a public exploit ships with pre-built records for roughly 800 kernel builds. The vulnerability, tracked asCVE-2026-64531CVSS score...

Important: kernel-livepatch-6.12.90-120.164

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject oversized nested action attrs CVE-2026-64531 In the Linux kernel, the following vulnerability has been resolved: xfs: resample the data fork mapping after cycling ILOCK CVE-2026-64600...

Exploit for CVE-2026-64531

ovswrap-poc CVE-2026-...

Exploit for CVE-2026-64531

OVSwrap CVE-2026-64531 Mitigation Tool A simple script that...

CVE-2026-64531

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject oversized nested action attrs Open vSwitch stores generated flow actions as nlattrs, whose nlalen field is u16. Commit a1e64addf3ff "net: openvswitch: remove misbehaving actions length check" allowed the...

The vulnerability of the validate_push_nsh() function in the net_openvswitch/flow_netlink.c module, which is part of the Open vSwitch router support for Linux operating systems, allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the validatepushnsh function in the netopenvswitch/flownetlink.c module, which is part of the Open vSwitch router support in Linux operating systems, relates to the pointer manipulation. Exploiting this vulnerability could allow an attacker to compromise the confidentiality,...

Linux Distros Unpatched Vulnerability : CVE-2026-53227

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net: openvswitch: fix possible kfreeskb of ERRPTR After the patch in the Fixes tag, the allocation of the reply skb can happen either before or after locking th...

CVE-2026-53227

A flaw was found in the Linux kernel's Open vSwitch OVS component. This issue occurs due to incorrect error handling during the allocation of a 'reply' skb socket buffer after locking the ovsmutex. If the allocation fails, an invalid pointer may be passed to kfreeskb, leading to a system crash an...

CVE-2026-53227

CVE-2026-53227 affects the Linux kernel net/openvswitch path. The issue arises when allocating the reply skb after taking ovs_mutex, where an error path can leave the skb with an ERR_PTR and later free it during cleanup, leading to a possible invalid free. The fix sets the pointer to NULL after s...

Important: kernel6.18

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: bpf: fix end-of-list detection in cgroupstoragegetnextkey CVE-2026-45838 In the Linux kernel, the following vulnerability has been resolved: bpf: reject negative CO-RE accessor indices in bpfcoreparsespec...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: openvswitch: vport: Fixed a self-deadlock issue when releasing tunnel ports. Vports are used concurrently and are protected by RCU. Therefore, netdevput must be called after the RCU grace period. This can happen either during a R...

OPENSUSE-SU-2026:20972-1 Security update for openvswitch

This update for openvswitch fixes the following issues - CVE-2026-5265: heap over-read in ICMP error response generation bsc1262498. - CVE-2026-5367: heap over-read in OVN DHCPv6 client ID processing bsc1262499. - CVE-2026-34956: Invalid memory access in conntrack FTP alg bsc1261273. Changes for...

ALSA-2026:25217 Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: scsi: target: iscsi: Fix use-after-free in iscsitdecconnusagecount CVE-2026-23216 kernel: Linux kernel: Use-after-free in bonding driver leads to denial of service CVE-2026-31419 kernel:...

CVE-2026-36499

A flaw was found in Open vSwitch. A missing upper-bound check in udpifsetthreads allows an attacker with OVSDB write access to request an excessive number of handler or revalidation threads, causing resource exhaustion and denial of service. Reported against Open vSwitch v3.6.90; affects...

SUSE CVE-2026-36499

A missing upper-bound check in the udpifsetthreads function of Open vSwitch v3.6.90 allows an attacker with OVSDB write access to request an excessive number of handler or revalidation threads. This can cause a denial of service DoS via resource exhaustion...

Linux Distros Unpatched Vulnerability : CVE-2026-36499

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A missing upper-bound check in the udpifsetthreads function of Open vSwitch v3.6.90 allows an attacker with OVSDB write access to request an excessive number of...

CVE-2026-36499

A missing upper-bound check in the udpifsetthreads function of Open vSwitch v3.6.90 allows an attacker with OVSDB write access to request an excessive number of handler or revalidation threads. This can cause a denial of service DoS via resource exhaustion...

DEBIAN-CVE-2026-36499

A missing upper-bound check in the udpifsetthreads function of Open vSwitch v3.6.90 allows an attacker with OVSDB write access to request an excessive number of handler or revalidation threads. This can cause a denial of service DoS via resource exhaustion...

CVE-2026-36499

A missing upper-bound check in the udpifsetthreads function of Open vSwitch v3.6.90 allows an attacker with OVSDB write access to request an excessive number of handler or revalidation threads. This can cause a denial of service DoS via resource exhaustion...