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CVE-2024-38558 is an integrity flaw in the Linux kernel Open vSwitch (OVS) datapath's OVS_PACKET_CMD_EXECUTE processing path. Packet metadata, including the connection-tracking original tuple, is parsed before packet headers. During ICMPv6 parsing, OVS cleared IPv6 Neighbor Discovery fields regardless of whether the packet was a Neighbor Discovery packet. The Neighbor Discovery and original-conntrack-tuple fields share storage in an IPv6 union, so this clearing operation overwrote most of the original destination address in conntrack metadata for non-ND ICMPv6 packets. The correction limits initialization of Neighbor Discovery fields to actual ND packets while ensuring the fields are initialized before parsing ND options.
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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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Every observed campaign linking this CVE to a named adversary.
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YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.