What’s Vulnerable › Vulnerabilities

CVE-2019-20382

• Severity: low (CVSS 3.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-03-05 · updated 2026-06-17
• Weakness: CWE-401

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.

Affected products

• Canonical Ubuntu Linux: 16.04, 18.04, 19.10, 20.04
• Debian Linux: 9.0, 10.0
• openSUSE Leap: 15.1
• QEMU: 4.1.0

References

• http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html
• http://www.openwall.com/lists/oss-security/2020/03/05/1
• https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=6bf21f3d83e95bcc4ba35a7a07cc6655e8b010b0
• https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html
• https://usn.ubuntu.com/4372-1/
• https://www.debian.org/security/2020/dsa-4665
• http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html
• http://www.openwall.com/lists/oss-security/2020/03/05/1
• https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=6bf21f3d83e95bcc4ba35a7a07cc6655e8b010b0
• https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html
• https://usn.ubuntu.com/4372-1/
• https://www.debian.org/security/2020/dsa-4665

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