{"id":"CLSA-2026-1786495354","summary":"Fix CVE(s): CVE-2026-12996","details":"   * SECURITY UPDATE: Use-after-free of a pending dedicated ACK buffer when a\n     TLS session is freed during session promotion or expiry\n     - debian/patches/CVE-2026-12996.patch: add the check_session_buf_not_used()\n       safeguard, including its ks-\u003eack_write_buf check, and call it before\n       every site in tls_multi_process() that frees or resets a session\n     - CVE-2026-12996\n     - the safeguard does not exist in 2.4.7, so it is introduced here already\n       in its post-CVE-2026-12996 form; as a result this patch also fixes\n       CVE-2026-40215, which shares the same safeguard","modified":"2026-10-26T09:31:52.919903002Z","published":"2026-08-12T00:42:45Z","upstream":["CVE-2026-12996","CVE-2026-40215"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/debian10els/CLSA-2026-1786495354.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-12996"}],"affected":[{"package":{"name":"openvpn","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/openvpn?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.7-1+deb10u1+tuxcare.els2"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1786495354.json"}}],"schema_version":"1.9.0"}