CVE-2026-23083

CVE-2026-23083 is a Linux kernel vulnerability affecting FOU (IPv4/IPv6 over UDP) handling, where setting FOU_ATTR_IPPROTO to 0 could leave the skb unfreed in fou_udp_recv() and not retried in ip_protocol_deliver_rcu(). The fix suppresses 0 for FOU_ATTR_IPPROTO and applies upstream patching to pr...

CVE-2026-23083 fou: Don't allow 0 for FOU_ATTR_IPPROTO.

In the Linux kernel, the following vulnerability has been resolved: fou: Don't allow 0 for FOUATTRIPPROTO. fouudprecv has the same problem mentioned in the previous patch. If FOUATTRIPPROTO is set to 0, skb is not freed by fouudprecv nor "resubmit"-ted in ipprotocoldeliverrcu. Let's forbid 0 for...

SUSE-SU-2026:0290-1 Security update for openvswitch3

This update for openvswitch3 fixes the following issues: Update to v3.1.7: - CVE-2023-3966: openvswitch, openvswitch3: Invalid memory access in Geneve with HW offload bsc1219465. - CVE-2024-2182: openvswitch: ov: insufficient validation of incoming BFD packets may lead to denial of service...

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 nwproto is wildcarded...

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 nwproto is wildcarded...

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 nwproto is wildcarded...

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 nwproto is wildcarded...