CVE-2025-24356 UDP traffic amplification via fastd's fast reconnect feature

fastd is a VPN daemon which tunnels IP packets and Ethernet frames over UDP. When receiving a data packet from an unknown IP address/port combination, fastd will assume that one of its connected peers has moved to a new address and initiate a reconnect by sending a handshake packet. This "fast...

CVE-2025-24356 UDP traffic amplification via fastd's fast reconnect feature

fastd is a VPN daemon which tunnels IP packets and Ethernet frames over UDP. When receiving a data packet from an unknown IP address/port combination, fastd will assume that one of its connected peers has moved to a new address and initiate a reconnect by sending a handshake packet. This "fast...

CVE-2025-24356

The CVE-2025-24356 affects the fastd VPN daemon. When fastd receives a data packet from an unknown IP/port, it may assume a peer moved and trigger a fast-reconnect handshake (~150 bytes of UDP payload), creating an amplification factor of about 12–13 for UDP traffic. This can be exploited by spoo...

CVE-2025-24356 UDP traffic amplification via fastd's fast reconnect feature

fastd is a VPN daemon which tunnels IP packets and Ethernet frames over UDP. When receiving a data packet from an unknown IP address/port combination, fastd will assume that one of its connected peers has moved to a new address and initiate a reconnect by sending a handshake packet. This "fast...

DEBIAN-CVE-2025-0650

A flaw was found in the Open Virtual Network OVN. Specially crafted UDP packets may bypass egress access control lists ACLs in OVN installations configured with a logical switch with DNS records set on it and if the same switch has any egress ACLs configured. This issue can lead to unauthorized...

CVE-2025-0650

A flaw was found in the Open Virtual Network OVN. Specially crafted UDP packets may bypass egress access control lists ACLs in OVN installations configured with a logical switch with DNS records set on it and if the same switch has any egress ACLs configured. This issue can lead to unauthorized...

CVE-2025-0650

A flaw was found in the Open Virtual Network OVN. Specially crafted UDP packets may bypass egress access control lists ACLs in OVN installations configured with a logical switch with DNS records set on it and if the same switch has any egress ACLs configured. This issue can lead to unauthorized...

UBUNTU-CVE-2025-0650

A flaw was found in the Open Virtual Network OVN. Specially crafted UDP packets may bypass egress access control lists ACLs in OVN installations configured with a logical switch with DNS records set on it and if the same switch has any egress ACLs configured. This issue can lead to unauthorized...

CVE-2025-0650 Ovn: egress acls may be bypassed via specially crafted udp packet

A flaw was found in the Open Virtual Network OVN. Specially crafted UDP packets may bypass egress access control lists ACLs in OVN installations configured with a logical switch with DNS records set on it and if the same switch has any egress ACLs configured. This issue can lead to unauthorized...

CVE-2025-0650

A flaw was found in the Open Virtual Network OVN. Specially crafted UDP packets may bypass egress access control lists ACLs in OVN installations configured with a logical switch with DNS records set on it and if the same switch has any egress ACLs configured. This issue can lead to unauthorized...

CVE-2025-0650 Ovn: egress acls may be bypassed via specially crafted udp packet

A flaw was found in the Open Virtual Network OVN. Specially crafted UDP packets may bypass egress access control lists ACLs in OVN installations configured with a logical switch with DNS records set on it and if the same switch has any egress ACLs configured. This issue can lead to unauthorized...

CVE-2025-0650

OVN/Open vSwitch vulnerability CVE-2025-0650 enables bypass of egress ACLs via specially crafted UDP packets on a logical switch with DNS records and existing egress ACLs, potentially allowing unauthorized access to VMs/containers. Public advisories (SUSE/SUSE-SU-2026:0280-1 and 0290-1) recommend...

K000149382: Linux kernel vulnerability CVE-2024-35884

Security Advisory Description In the Linux kernel, the following vulnerability has been resolved: udp: do not accept non-tunnel GSO skbs landing in a tunnel When rx-udp-gro-forwarding is enabled UDP packets might be GROed when being forwarded. If such packets might land in a tunnel this can cause...

CVE-2025-21637

In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: udpport: avoid using current-nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons: - Inconsistency: getting info from the...

AZL-57240 CVE-2025-21637 affecting package kernel for versions less than 5.15.180.1-1

In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: udpport: avoid using current-nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons: - Inconsistency: getting info from the...

CVE-2025-21637 sctp: sysctl: udp_port: avoid using current->nsproxy

In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: udpport: avoid using current-nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons: - Inconsistency: getting info from the...

SUSE CVE-2024-7596

Proposed Generic UDP Encapsulation GUE IETF Draft do not validate or verify the source of a network packet allowing an attacker to spoof and route arbitrary traffic via an exposed network interface that can lead to spoofing, access control bypass, and other unexpected network behaviors. This can ...

CVE-2024-7596

An insecure configuration flaw was found in the Generic UDP Encapsulation Protocol. When configured to not require authentication or filtering, this issue could allow a remote unauthenticated attacker to spoof packets or bypass access controls. Mitigation See references section for detailed...

SUSE-SU-2025:0071-1 Security update for dnsmasq

This update for dnsmasq fixes the following issues: - Version update to 2.90: - CVE-2023-50387: Fixed a Denial Of Service while trying to validate specially crafted DNSSEC responses. bsc1219823 - CVE-2023-50868: Fixed a Denial Of Service while trying to validate specially crafted DNSSEC responses...

The vulnerability of the UDP packet verification mechanism in microprogramming software for Cisco SD-WAN vEdge allows a attacker to trigger a service failure.

The vulnerability of the UDP packet verification mechanism in Cisco SD-WAN vEdge microprogramming software lies in the fact that the operation results are stored outside of the buffer in memory. Exploiting this vulnerability allows a malicious actor to cause service failures by sending specially...