{"cve":"CVE-2021-3752","nvd":{"published":"2022-02-16T19:15:08.587","modified":"2026-06-17T04:05:41.967","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.1},"cwes":["CWE-362","CWE-416"],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=1999544","https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html","https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html","https://lore.kernel.org/lkml/20211115165435.133245729%40linuxfoundation.org/","https://security.netapp.com/advisory/ntap-20220318-0009/"],"products":["debian:debian_linux","fedoraproject:fedora","linux:linux_kernel","netapp:h300e_firmware","netapp:h300s_firmware","netapp:h410c_firmware","netapp:h410s_firmware","netapp:h500e_firmware","netapp:h500s_firmware","netapp:h700e_firmware","netapp:h700s_firmware","oracle:communications_cloud_native_core_binding_support_function","oracle:communications_cloud_native_core_network_exposure_function","oracle:communications_cloud_native_core_policy","redhat:3scale","redhat:enterprise_linux","redhat:enterprise_linux_for_real_time","redhat:enterprise_linux_for_real_time_for_nfv","redhat:virtualization_host"],"source":"nvd","synced_at":"2026-10-19T21:28:04.509275555+00:00"},"epss":{"cve":"CVE-2021-3752","score":0.01736,"percentile":0.77694,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}