CyberRota Analysis
AI-GeneratedA vulnerability in the Linux kernel's ife_decode function allows for a malformed IFE frame to potentially lead to a crash due to the inner Ethernet header being inaccessible. This issue arises when the function fails to ensure that the inner header meets the required length, which could disrupt network operations. Linux system administrators and developers should prioritize this fix to maintain system stability and prevent potential denial-of-service scenarios.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: net: ife: require ETH_HLEN to be pullable in ife_decode() ife decode may return after making only the outer IFE header and metadata pullable. The caller then passes the decapsulated packet to eth_type_trans(), which expects the inner Ethernet header to be accessible from the linear data area. With a malformed IFE frame, the inner Ethernet header may still be shorter than ETH_HLEN in the linear area, which can lead to a crash in the original code. Fix this by extending the pull check in ife_decode() so that the inner Ethernet header is also guaranteed to be pullable before returning.