CVE-2019-20382

LOWNVD 3.53.5—

3.5

QEMU 4.1.0 has a memory leak in zrle_compress_data in ui/vnc-enc-zrle.c during a VNC disconnect operation because libz is misused, resulting in a situation where memory allocated in deflateInit2 is not freed in deflateEnd.

CVSS v3: 3.5
EG Score: 3.5(medium)
EPSS: 13.9%
KEV: Not listed

Published

March 5, 2020

Last Modified

November 21, 2024

References (12)

cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html
cve@mitrehttp://www.openwall.com/lists/oss-security/2020/03/05/1
cve@mitrehttps://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=6bf21f3d83e95bcc4ba35a7a07cc6655e8b010b0
cve@mitrehttps://lists.debian.org/debian-lts-announce/2020/07/msg00020.html
cve@mitrehttps://usn.ubuntu.com/4372-1/
cve@mitrehttps://www.debian.org/security/2020/dsa-4665
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2020/03/05/1
af854a3a-2127-422b-91ae-364da2661108https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=6bf21f3d83e95bcc4ba35a7a07cc6655e8b010b0
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4372-1/
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2020/dsa-4665

Patch Availability(7)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	qemu-utils (1:8.2.2+ds-0ubuntu1.4) @ noble	2026-05-27	ubuntu
ubuntu	qemu-utils (1:2.5+dfsg-5ubuntu10.44) @ xenial	2026-05-27	ubuntu
redhat	qemu-kvm-rhev-10:2.12.0-18.el7_6.12	2020-10-05	redhat
redhat	qemu-kvm-10:1.5.3-175.el7	2020-09-29	redhat
redhat	qemu-kvm-ma-10:2.12.0-48.el7	2020-09-29	redhat
redhat	qemu-kvm-rhev-10:2.12.0-48.el7	2020-08-03	redhat
redhat	virt:rhel-8020020200601195459.4cda2c84	2020-06-30	redhat

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

(7)

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.

Data Freshness Timeline

(refreshed 10× in last 7d / 20× 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.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 07:00 UTCEG score recompute
2026-05-27 07:00 UTCVendor advisory
2026-05-27 07:00 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
2026-05-26 06:16 UTCOSV refresh

Frequently asked(5)

What is CVE-2019-20382?

CVE-2019-20382 is a low vulnerability published on March 5, 2020. QEMU 4.1.0 has a memory leak in zrlecompressdata in ui/vnc-enc-zrle.c during a VNC disconnect operation because libz is misused, resulting in a situation where memory allocated in deflateInit2 is not freed in deflateEnd.

When was CVE-2019-20382 disclosed?

CVE-2019-20382 was first published in the National Vulnerability Database on March 5, 2020, 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-2019-20382 actively exploited?

CVE-2019-20382 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 13.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-20382?

CVE-2019-20382 has a CVSS v3 base score of 3.5 (NVD).

How do I remediate CVE-2019-20382?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-20382, 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

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