CVE-2019-20382

Name: CVE-2019-20382
Creator: NVD / NIST
Published: 2020-03-05T19:15:11.357+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.5/10EPSS 0.87%

Last modified Jun 17, 2026

CVE-2019-20382 is a low-severity vulnerability rated 3.5/10 on the CVSS scale. 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.. EPSS estimates a 0.87% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

3.5/10

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS Probability

0.87%

54.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-401

Affected Software

Vendor	Product	Versions
Qemu	Qemu	4.1.0
Opensuse	Leap	15.1
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	19.10
Canonical	Ubuntu Linux	20.04

References

http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.htmlBroken Link, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/03/05/1Mailing List, Patch, Third Party Advisory
https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=6bf21f3d83e95bcc4ba35a7a07cc6655e8b010b0
https://lists.debian.org/debian-lts-announce/2020/07/msg00020.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/4372-1/Third Party Advisory
https://www.debian.org/security/2020/dsa-4665Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.htmlBroken Link, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/03/05/1Mailing List, Patch, Third Party Advisory
https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=6bf21f3d83e95bcc4ba35a7a07cc6655e8b010b0
https://lists.debian.org/debian-lts-announce/2020/07/msg00020.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/4372-1/Third Party Advisory
https://www.debian.org/security/2020/dsa-4665Third Party Advisory

Timeline

Published: Mar 5, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-20382?

How severe is CVE-2019-20382?

CVE-2019-20382 has a CVSS score of 3.5/10 (LOW severity). The EPSS model estimates a 0.87% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20382?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-20382?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST