What is CVE-2019-19079?

CVE-2019-19079 is a high-severity vulnerability in Linux Kernel, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2019-11-18.

How severe is CVE-2019-19079?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Linux Kernel

CVE-2019-19079

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.

Published 2019-11-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.033 (88.1th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.029 · newest: 0.033 · change: +0.004

Affected products

Linux Kernel
Canonical Ubuntu Linux — versions 18.04

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3 (Release Notes, Vendor Advisory)
github.com/torvalds/linux/commit/a21b7f0cff1906a93a0130b74713b15a0b36481d (Patch, Tool Signature)
security.netapp.com/advisory/ntap-20191205-0001/ (Third Party Advisory)
usn.ubuntu.com/4258-1/ (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2019-19079?: CVE-2019-19079 is a high-severity vulnerability in Linux Kernel, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2019-11-18.
How severe is CVE-2019-19079?: High severity. CVSS v3 base score is 7.5 out of 10.