CVE-2026-31435 Linux内核netfs读取重试漏洞

// Pseudo-code demonstrating the vulnerability logic // Triggering a netfs read retry scenario void trigger_vulnerability() { // Simulate netfs read request and retry condition struct netfs_read_request *rreq; struct netfs_read_subrequest *subreq; // Vulnerable: uninitialized // ... setup ... // Simulate condition causing jump to abandon if (needs_retry) { goto abandon; // subreq is not initialized here } // Normal flow... return; abandon: // BUG: Using uninitialized or stale subreq pointer // leads to kernel panic (Oops) process_subrequests(subreq); }