A memory leak in the qrtr_tun_write_iter() function in net/qrtr/tun.c in the Linux kernel before 5.3 allows attackers to cause a denial of service (memory consumption), aka CID-a21b7f0cff19. CREATE(Triage):(User=admin) CVE-2019-19079 (https://nvd.nist.gov/vuln/detail/CVE-2019-19079)