CVE-2019-19079

HIGHNVD 7.57.5—

7.5

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.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 79.7%
KEV: Not listed

Published

November 18, 2019

Last Modified

November 21, 2024

References (8)

cve@mitrehttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3
cve@mitrehttps://github.com/torvalds/linux/commit/a21b7f0cff1906a93a0130b74713b15a0b36481d
cve@mitrehttps://security.netapp.com/advisory/ntap-20191205-0001/
cve@mitrehttps://usn.ubuntu.com/4258-1/
af854a3a-2127-422b-91ae-364da2661108https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/a21b7f0cff1906a93a0130b74713b15a0b36481d
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20191205-0001/
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4258-1/

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-image-oracle-edge (5.0.0.1010.9) @ bionic	2026-05-27	ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-401Missing Release of Memory after Effective Lifetime (Memory Leak)

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

UbuntuUSN-4258-1LOW
Linux kernel vulnerabilities

Data Freshness Timeline

(refreshed 9× in last 7d / 9× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:38 UTCepss_batch
2026-05-27 11:31 UTCEG score recompute
2026-05-27 11:31 UTCVendor advisory
2026-05-27 11:31 UTCGHSA enrichment
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2019-19079?

CVE-2019-19079 is a high vulnerability published on November 18, 2019. A memory leak in the qrtrtunwrite_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.

When was CVE-2019-19079 disclosed?

CVE-2019-19079 was first published in the National Vulnerability Database on November 18, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2019-19079 actively exploited?

CVE-2019-19079 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 79.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-19079?

CVE-2019-19079 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2019-19079?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-19079, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2019-19079

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