{"id":"CVE-2021-3752","details":"A use-after-free flaw was found in the Linux kernel’s Bluetooth subsystem in the way user calls connect to the socket and disconnect simultaneously due to a race condition. This flaw allows a user to crash the system or escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.","modified":"2026-04-02T07:08:38.139711Z","published":"2022-02-16T19:15:08.587Z","related":["ALSA-2022:1988","SUSE-SU-2021:3337-1","SUSE-SU-2021:3338-1","SUSE-SU-2021:3339-1","SUSE-SU-2021:3386-1","SUSE-SU-2021:3387-1","SUSE-SU-2021:3388-1","SUSE-SU-2021:3389-1","SUSE-SU-2021:3415-1","SUSE-SU-2021:3447-1","SUSE-SU-2021:3684-1","SUSE-SU-2021:3710-1","SUSE-SU-2021:3735-1","SUSE-SU-2021:3737-1","SUSE-SU-2021:3738-1","SUSE-SU-2021:3751-1","SUSE-SU-2021:3876-1","SUSE-SU-2021:3929-1","SUSE-SU-2021:3935-1","SUSE-SU-2021:3969-1","SUSE-SU-2021:3972-1","openSUSE-SU-2021:1357-1","openSUSE-SU-2021:1365-1","openSUSE-SU-2021:3338-1","openSUSE-SU-2021:3387-1","openSUSE-SU-2021:3447-1","openSUSE-SU-2021:3876-1"],"references":[{"type":"WEB","url":"https://lore.kernel.org/lkml/20211115165435.133245729%40linuxfoundation.org/"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20220318-0009/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2022/dsa-5096"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1999544"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpujul2022.html"},{"type":"EVIDENCE","url":"https://www.openwall.com/lists/oss-security/2021/09/15/4"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/3scale/apicast","events":[{"introduced":"0"},{"last_affected":"bb459e2f01eb14330a01a8476210d925d53c7002"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"2.0"}]}}],"versions":["v0.1","v0.2","v2","v2.0.0","v2.0.0-alpha1","v2.0.0-beta1","v2.0.0-rc1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3752.json","unresolved_ranges":[{"events":[{"introduced":"2.6.12"},{"fixed":"4.4.293"}]},{"events":[{"introduced":"4.5"},{"fixed":"4.9.291"}]},{"events":[{"introduced":"4.10"},{"fixed":"4.14.256"}]},{"events":[{"introduced":"4.15"},{"fixed":"4.19.218"}]},{"events":[{"introduced":"4.20"},{"fixed":"5.4.160"}]},{"events":[{"introduced":"5.5"},{"fixed":"5.10.80"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.14.19"}]},{"events":[{"introduced":"5.15"},{"fixed":"5.15.3"}]},{"events":[{"introduced":"0"},{"last_affected":"4.0"}]},{"events":[{"introduced":"0"},{"last_affected":"34"}]},{"events":[{"introduced":"0"},{"last_affected":"7.0"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"7"}]},{"events":[{"introduced":"0"},{"last_affected":"7"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]},{"events":[{"introduced":"0"},{"last_affected":"22.1.3"}]},{"events":[{"introduced":"0"},{"last_affected":"22.1.1"}]},{"events":[{"introduced":"0"},{"last_affected":"22.2.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}