{"id":"CVE-2019-12818","details":"An issue was discovered in the Linux kernel before 4.20.15. The nfc_llcp_build_tlv function in net/nfc/llcp_commands.c may return NULL. If the caller does not check for this, it will trigger a NULL pointer dereference. This will cause denial of service. This affects nfc_llcp_build_gb in net/nfc/llcp_core.c.","modified":"2026-03-12T22:58:34.980582Z","published":"2019-06-14T02:29:00.253Z","related":["SUSE-SU-2019:1550-1","SUSE-SU-2019:1823-1","SUSE-SU-2019:1823-2","SUSE-SU-2019:1829-1","SUSE-SU-2019:1851-1","SUSE-SU-2019:1852-1","SUSE-SU-2019:1855-1","SUSE-SU-2019:1870-1","SUSE-SU-2019:2069-1","SUSE-SU-2019:2430-1","SUSE-SU-2019:2450-1","openSUSE-SU-2019:1571-1","openSUSE-SU-2019:1579-1"],"references":[{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.html"},{"type":"WEB","url":"https://usn.ubuntu.com/4094-1/"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html"},{"type":"WEB","url":"http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html"},{"type":"WEB","url":"https://support.f5.com/csp/article/K91444306"},{"type":"WEB","url":"https://usn.ubuntu.com/4118-1/"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/108776"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20190710-0002/"},{"type":"ADVISORY","url":"https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.15"},{"type":"FIX","url":"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=58bdd544e2933a21a51eecf17c3f5f94038261b5"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/58bdd544e2933a21a51eecf17c3f5f94038261b5"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"4.20.15"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-12818.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}