{"id":"CLSA-2026-1791803568","summary":"Fix CVE(s): CVE-2026-19445, CVE-2026-4786","details":"   * SECURITY UPDATE: use-after-free in the ssl servername (SNI) callback\n     - debian/patches/CVE-2026-19445.patch: take the SSLContext from the\n       connection and hold references to it and to the callback while the\n       callback runs, instead of using the borrowed pointer registered with\n       OpenSSL, and unregister the callback when the context is deallocated,\n       in Modules/_ssl.c, so a servername callback that switches the\n       connection to another context can no longer make the server call\n       through a freed SSLContext.\n     - CVE-2026-19445","modified":"2026-10-26T09:32:02.673222110Z","published":"2026-10-19T20:53:46Z","upstream":["CVE-2026-19445","CVE-2026-4786"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/ubuntu16.04els/CLSA-2026-1791803568.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-19445"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4786"}],"affected":[{"package":{"name":"idle-python3.5","ecosystem":"TuxCare:Ubuntu:16.04","purl":"pkg:deb/tuxcare/idle-python3.5?distro=ubuntu-16.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.5.2-2ubuntu0~16.04.13+tuxcare.els31"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791803568.json"}},{"package":{"name":"libpython3.5","ecosystem":"TuxCare:Ubuntu:16.04","purl":"pkg:deb/tuxcare/libpython3.5?distro=ubuntu-16.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.5.2-2ubuntu0~16.04.13+tuxcare.els31"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791803568.json"}},{"package":{"name":"libpython3.5-dev","ecosystem":"TuxCare:Ubuntu:16.04","purl":"pkg:deb/tuxcare/libpython3.5-dev?distro=ubuntu-16.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.5.2-2ubuntu0~16.04.13+tuxcare.els31"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791803568.json"}},{"package":{"name":"libpython3.5-minimal","ecosystem":"TuxCare:Ubuntu:16.04","purl":"pkg:deb/tuxcare/libpython3.5-minimal?distro=ubuntu-16.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.5.2-2ubuntu0~16.04.13+tuxcare.els31"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791803568.json"}},{"package":{"name":"libpython3.5-stdlib","ecosystem":"TuxCare:Ubuntu:16.04","purl":"pkg:deb/tuxcare/libpython3.5-stdlib?distro=ubuntu-16.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.5.2-2ubuntu0~16.04.13+tuxcare.els31"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791803568.json"}},{"package":{"name":"libpython3.5-testsuite","ecosystem":"TuxCare:Ubuntu:16.04","purl":"pkg:deb/tuxcare/libpython3.5-testsuite?distro=ubuntu-16.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.5.2-2ubuntu0~16.04.13+tuxcare.els31"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791803568.json"}},{"package":{"name":"python3.5","ecosystem":"TuxCare:Ubuntu:16.04","purl":"pkg:deb/tuxcare/python3.5?distro=ubuntu-16.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.5.2-2ubuntu0~16.04.13+tuxcare.els31"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791803568.json"}},{"package":{"name":"python3.5-dev","ecosystem":"TuxCare:Ubuntu:16.04","purl":"pkg:deb/tuxcare/python3.5-dev?distro=ubuntu-16.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.5.2-2ubuntu0~16.04.13+tuxcare.els31"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791803568.json"}},{"package":{"name":"python3.5-doc","ecosystem":"TuxCare:Ubuntu:16.04","purl":"pkg:deb/tuxcare/python3.5-doc?distro=ubuntu-16.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.5.2-2ubuntu0~16.04.13+tuxcare.els31"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791803568.json"}},{"package":{"name":"python3.5-examples","ecosystem":"TuxCare:Ubuntu:16.04","purl":"pkg:deb/tuxcare/python3.5-examples?distro=ubuntu-16.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.5.2-2ubuntu0~16.04.13+tuxcare.els31"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791803568.json"}},{"package":{"name":"python3.5-minimal","ecosystem":"TuxCare:Ubuntu:16.04","purl":"pkg:deb/tuxcare/python3.5-minimal?distro=ubuntu-16.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.5.2-2ubuntu0~16.04.13+tuxcare.els31"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791803568.json"}},{"package":{"name":"python3.5-venv","ecosystem":"TuxCare:Ubuntu:16.04","purl":"pkg:deb/tuxcare/python3.5-venv?distro=ubuntu-16.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.5.2-2ubuntu0~16.04.13+tuxcare.els31"}]}],"database_specific":{"source":"https://github.com/cloudlinu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