CVE ID:	CVE-2019-12818
Description:	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.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2019-12818 BugTraq ID: 108776 http://www.securityfocus.com/bid/108776 http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=58bdd544e2933a21a51eecf17c3f5f94038261b5 https://github.com/torvalds/linux/commit/58bdd544e2933a21a51eecf17c3f5f94038261b5 https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.15 SuSE Security Announcement: openSUSE-SU-2019:1570 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html SuSE Security Announcement: openSUSE-SU-2019:1571 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.html SuSE Security Announcement: openSUSE-SU-2019:1579 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html https://usn.ubuntu.com/4094-1/ https://usn.ubuntu.com/4118-1/