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CVE-2026-86564

Dpdk: dpdk: missing length validation before reading command_data in virtio-net control queue handler

A flaw was found in DPDK lib/vhost. Missing length validation before reading command_data in the virtio-net control-queue handler can cause an out-of-bounds read and a host process crash.

CVSS 3.1 · 3.3 Low EPSS < 1% KEV · Not listed
Vendors
Dpdk Red Hat Redhat
Products
Dpdk Enterprise Linux Fast Datapath For Rhel 10 and 5 more
CVE-2026-86561

Dpdk: dpdk: missing memory size validation before mmap in vhost memory region setup

A flaw was found in DPDK lib/vhost. Memory size is not adequately validated before mmap during vhost memory-region setup, which can lead to a host crash or memory corruption.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Dpdk Red Hat Redhat
Products
Dpdk Enterprise Linux Enterprise Linux and 5 more
CVE-2026-86567

Dpdk: dpdk: vduse handler fails to invalidate vring pointers when iotlb is invalidated, leading to use-after-unmap

A flaw was found in DPDK lib/vhost. The VDUSE handler fails to invalidate vring pointers when the IOTLB is invalidated, leading to use-after-unmap.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Dpdk Red Hat Redhat
Products
Dpdk Enterprise Linux Enterprise Linux and 5 more
CVE-2026-86565

Dpdk: dpdk: guest can desynchronize virtqueue size from inflight descriptor table size, causing out-of-bounds write

A flaw was found in DPDK lib/vhost. A guest can desynchronize virtqueue size from inflight descriptor table size, causing an out-of-bounds write in the host vhost process.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
Dpdk Red Hat Redhat
Products
Dpdk Enterprise Linux Enterprise Linux and 5 more
CVE-2026-34956

Openvswitch: open vswitch: denial of service via malformed ftp epasv command

A flaw was found in Open vSwitch. When Open vSwitch is configured with a conntrack flow using FTP helpers over the userspace datapath, a remote attacker can send a specially crafted FTP stream with an EPASV command exceeding 255 characters. This heap access error can lead to a crash, resulting in a Denial of Service (DoS) for the affected system.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Fast Datapath Openshift and 5 more
CVE-2026-5265

Ovn: ovn: heap over-read in icmp error response generation

When generating an ICMP Destination Unreachable or Packet Too Big response, the handler copies a portion of the original packet into the ICMP error body using the IP header's self-declared total length (ip_tot_len for IPv4, ip6_plen for IPv6) without validating it against the actual packet buffer size. A VM can send a short packet with an inflated IP length field that triggers an ICMP error (e.g., by hitting a reject ACL), causing ovn-controller to read heap memory beyond the valid packet data and include it in the ICMP response sent back to the VM.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Fast Datapath
CVE-2023-1668

openvswitch: ip proto 0 triggers incorrect handling

A flaw was found in openvswitch (OVS). When processing an IP packet with protocol 0, OVS will install the datapath flow without the action modifying the IP header. This issue results (for both kernel and userspace datapath) in installing a datapath flow matching all IP protocols (nw_proto is wildcarded) for this flow, but with an incorrect action, possibly causing incorrect handling of other IP packets with a != 0 IP protocol that matches this dp flow.

CVSS 3.1 · 8.2 High EPSS 1.2% KEV · Not listed
Vendors
Cloudbase Debian Redhat
Products
Open Vswitch Debian Linux Enterprise Linux and 5 more
CVE-2026-5367

Ovn: ovn: information disclosure via crafted dhcpv6 packets

A flaw was found in OVN (Open Virtual Network). A remote attacker, by sending crafted DHCPv6 (Dynamic Host Configuration Protocol for IPv6) SOLICIT packets with an inflated Client ID length, could cause the ovn-controller to read beyond the bounds of a packet. This out-of-bounds read can lead to the disclosure of sensitive information stored in heap memory, which is then returned to the attacker's virtual machine port.

CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Fast Datapath Openshift and 1 more
CVE-2023-5366

Openvswitch don't match packets on nd_target field

A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary IP addresses.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Openvswitch Redhat
Products
Openvswitch Enterprise Linux Fast Datapath and 4 more
CVE-2023-3153

Service monitor mac flow is not rate limited

A flaw was found in Open Virtual Network where the service monitor MAC does not properly rate limit. This issue could allow an attacker to cause a denial of service, including on deployments with CoPP enabled and properly configured.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Ovn Redhat
Products
Open Virtual Network Enterprise Linux Fast Datapath and 3 more