{"id":"CLSA-2026-1789985660","summary":"Fix CVE(s): CVE-2019-12439","details":"   * SECURITY UPDATE: DoS / symlink attack via the attacker-precreatable\n     pivot_root mount point\n     - debian/patches/CVE-2019-12439.patch: mount the root tmpfs on /tmp itself\n       in main() (bubblewrap.c) instead of creating /run/user/$UID/.bubblewrap\n       or /tmp/.bubblewrap-$UID, which another local user can pre-create as a\n       non-directory or as a symlink they control\n     - debian/patches/CVE-2019-12439-test.patch: upstream regression test for\n       the above, asserting the pivot_root scaffolding (/tmp/oldroot,\n       /tmp/newroot) stays invisible inside the container (tests/test-run.sh)\n     - CVE-2019-12439","modified":"2026-10-26T09:32:03.918134717Z","published":"2026-09-21T15:55:29Z","upstream":["CVE-2019-12439"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1789985660.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-12439"}],"affected":[{"package":{"name":"bubblewrap","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/bubblewrap?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.1-1ubuntu0.1+tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1789985660.json"}}],"schema_version":"1.9.0"}