CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's IP Virtual Server (IPVS) component, specifically in the handling of TCP state lookups for IPv6 packets with extension headers. This flaw can lead to incorrect parsing of TCP headers, potentially allowing for unexpected behavior or exploitation in network traffic management. Organizations using Linux systems that rely on IPVS for load balancing should prioritize addressing this issue to mitigate potential risks associated with malformed IPv6 packets.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: ipvs: use parsed transport offset in TCP state lookup TCP state handling reparses the skb to find the TCP header. For IPv6 it uses sizeof(struct ipv6hdr), while the surrounding IPVS code already parsed the packet with ip_vs_fill_iph_skb() and has the real transport-header offset in iph.len. This makes TCP state handling look at the wrong bytes when an IPv6 packet carries extension headers. Use the parsed transport offset passed down from ip_vs_set_state() when reading the TCP header. For IPv4 and for IPv6 packets without extension headers, the passed offset matches the previous value.