{"uuid": "4e1c6885-3706-47b3-979c-fd9203d7c491", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2016-4557", "type": "seen", "source": "https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/bpf_priv_esc.rb", "content": "{\"actions\": [], \"aliases\": [], \"arch\": \"x86, x64\", \"author\": [\"jannh \", \"h00die \"], \"autofilter_ports\": [], \"autofilter_services\": [], \"check\": true, \"default_credential\": false, \"description\": \"Linux kernel 4.4 < 4.5.5 extended Berkeley Packet Filter (eBPF)\\n          does not properly reference count file descriptors, resulting\\n          in a use-after-free, which can be abused to escalate privileges.\\n\\n          The target system must be compiled with `CONFIG_BPF_SYSCALL`\\n          and must not have `kernel.unprivileged_bpf_disabled` set to 1.\\n\\n          Note, this module will overwrite the first few lines\\n          of `/etc/crontab` with a new cron job. The job will\\n          need to be manually removed.\\n\\n          This module has been tested successfully on Ubuntu 16.04 (x64)\\n          kernel 4.4.0-21-generic (default kernel).\", \"disclosure_date\": \"2016-05-04\", \"fullname\": \"exploit/linux/local/bpf_priv_esc\", \"is_install_path\": true, \"mod_time\": \"2026-05-14 11:43:36 +0000\", \"name\": \"Linux BPF doubleput UAF Privilege Escalation\", \"needs_cleanup\": true, \"notes\": {\"AKA\": [\"double-fdput\", \"doubleput.c\"], \"Reliability\": [\"unknown-reliability\"], \"SideEffects\": [\"unknown-side-effects\"], \"Stability\": [\"unknown-stability\"]}, \"path\": \"/modules/exploits/linux/local/bpf_priv_esc.rb\", \"platform\": \"Linux\", \"post_auth\": false, \"rank\": 400, \"ref_name\": \"linux/local/bpf_priv_esc\", \"references\": [\"BID-90309\", \"CVE-2016-4557\", \"EDB-39772\", \"URL-https://bugs.chromium.org/p/project-zero/issues/detail?id=808\", \"URL-https://usn.ubuntu.com/2965-1/\", \"URL-https://launchpad.net/bugs/1578705\", \"URL-http://changelogs.ubuntu.com/changelogs/pool/main/l/linux/linux_4.4.0-22.39/changelog\", \"URL-https://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-4557.html\", \"URL-https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8358b02bf67d3a5d8a825070e1aa73f25fb2e4c7\"], \"rport\": null, \"session_types\": [\"shell\", \"meterpreter\"], \"targets\": [\"Linux x86\", \"Linux x64\"], \"type\": \"exploit\"}", "creation_timestamp": "2026-09-08T06:49:06.314513Z"}