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CVE-2024-38558 is an improper initialization flaw in the Linux kernel Open vSwitch datapath's OVS_PACKET_CMD_EXECUTE handling. Packet metadata supplied through OVS_PACKET_ATTR_KEY is parsed before packet headers and can populate the connection-tracking original tuple in sw_flow_key. When subsequently parsing an ICMPv6 header, the datapath unconditionally clears Neighbor Discovery fields. Those fields share a union with the IPv6 conntrack original-tuple representation, causing non-ND ICMPv6 traffic to overwrite most of the original destination address. The fix restricts initialization of Neighbor Discovery fields to actual Neighbor Discovery packets.
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Linux kernel Open vSwitch flaw in which the original connection-tracking tuple could be overwritten for ICMPv6 traffic.
Linux kernel Open vSwitch flaw that can overwrite the connection-tracking original tuple for ICMPv6.
A Linux kernel Open vSwitch flaw that can overwrite the connection-tracking original tuple for ICMPv6 traffic.
A Linux kernel Open vSwitch flaw in which the original connection-tracking tuple may be overwritten for ICMPv6 traffic.
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Cross-references every affected SKU, including bundled OEM variants.
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