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.
References (6)
Core 6
Core References
Patch x_refsource_misc
https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=6bf21f3d83e95bcc4ba35a7a07cc6655e8b010b0
Mailing List, Patch, Third Party Advisory x_refsource_misc
http://www.openwall.com/lists/oss-security/2020/03/05/1
Broken Link, Third Party Advisory vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2020/dsa-4665
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4372-1/
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html
Scores
CVSS v3
3.5
EPSS
0.0004
EPSS Percentile
13.7%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Details
CWE
CWE-401
Status
published
Products (8)
canonical/ubuntu_linux
16.04
canonical/ubuntu_linux
18.04
canonical/ubuntu_linux
19.10
canonical/ubuntu_linux
20.04
debian/debian_linux
9.0
debian/debian_linux
10.0
opensuse/leap
15.1
qemu/qemu
4.1.0
Published
Mar 05, 2020
Tracked Since
Feb 18, 2026