CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's netfilter component, specifically in the ip6tables functionality, which processes IPv6 packets. Malformed IPv6 extension headers could potentially bypass security rules, leading to unauthorized access or exploitation of network resources. Organizations using Linux systems that rely on ip6tables for packet filtering should prioritize applying the fix to mitigate the risk of these malformed packets evading detection and control measures.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6tables: mark malformed IPv6 extension headers for hotdrop The ah, hbh and rt matches check that the fixed extension header is present, then use the header length field to derive the advertised extension header length for matching. For the ah match, add the missing advertised-length check. For hbh and rt, update the existing advertised-length checks. In all three cases, set hotdrop to true before returning false when the advertised extension header length exceeds the available skb data. Returning false treats the packet as a rule mismatch. Set hotdrop to true and drop malformed packets so they cannot bypass rules intended to drop packets with these IPv6 extension headers.