{"uuid": "8c7c9407-8ccc-44c0-82b2-4e09a6d37e1a", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "cve-2026-80521", "type": "seen", "source": "https://infosec.exchange/ap/users/116810780845358081/statuses/117320467615517835", "content": "\ud83d\udea8 **CVE-2026-80521: Linux kernel container escape**\nA public exploit chains an **AF_UNIX socket garbage-collector use-after-free** into host-level code execution from an unprivileged container.\nThe bug involves a race in the SCC garbage collector that leaves a freed `unix_vertex` reachable through a stale `scc_entry` pointer.\nThe PoC reportedly works against Ubuntu 26.04 and defeats several kernel hardening mechanisms.\nUbuntu 22.04, 24.04 and 26.04 are currently listed as affected in the article's September 23 update.\nTechnical breakdown + exploit chain:https://thecybersecguru.com/news/cve-2026-80521-ubuntu-kernel-container-escape/\n#Linux #Cybersecurity #ContainerSecurity #Docker #Kubernetes #CVE", "creation_timestamp": "2026-09-23T15:02:56.514916Z"}