{"id":"CVE-2021-4202","details":"A use-after-free flaw was found in nci_request in net/nfc/nci/core.c in NFC Controller Interface (NCI) in the Linux kernel. This flaw could allow a local attacker with user privileges to cause a data race problem while the device is getting removed, leading to a privilege escalation problem.","modified":"2026-03-15T14:09:00.737140Z","published":"2022-03-25T19:15:09.770Z","related":["SUSE-SU-2022:0169-1","SUSE-SU-2022:0197-1","SUSE-SU-2022:0198-1","SUSE-SU-2022:0288-1","SUSE-SU-2022:0289-1","SUSE-SU-2022:0362-1","SUSE-SU-2022:0364-1","SUSE-SU-2022:0366-1","SUSE-SU-2022:0367-1","SUSE-SU-2022:0371-1","SUSE-SU-2022:0372-1","SUSE-SU-2022:0418-1","SUSE-SU-2022:0463-1","SUSE-SU-2022:0477-1","SUSE-SU-2022:0552-1","SUSE-SU-2022:0555-1","openSUSE-SU-2022:0169-1","openSUSE-SU-2022:0198-1","openSUSE-SU-2022:0366-1"],"references":[{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20220513-0002/"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2022/06/01/2"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2022/06/04/2"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2022/06/07/2"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=3e3b5dfcd16a3e254aab61bd1e8c417dd4503102"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=48b71a9e66c2eab60564b1b1c85f4928ed04e406"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=86cdf8e38792545161dbe3350a7eced558ba4d15"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2036682"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-4202.json","unresolved_ranges":[{"events":[{"introduced":"3.2"},{"fixed":"4.4.294"}]},{"events":[{"introduced":"4.5"},{"fixed":"4.9.292"}]},{"events":[{"introduced":"4.10"},{"fixed":"4.14.257"}]},{"events":[{"introduced":"4.15"},{"fixed":"4.19.219"}]},{"events":[{"introduced":"4.20"},{"fixed":"5.4.163"}]},{"events":[{"introduced":"5.5.0"},{"fixed":"5.10.82"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.15.5"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}