There's a flaw in openjpeg in versions prior to 2.4.0 in src/lib/openjp2/pi.c. When an attacker is able to provide crafted input to be processed by the openjpeg encoder, this could cause an out-of-bounds read. The greatest impact from this flaw is to application availability.
https://bugzilla.redhat.com/show_bug.cgi?id=1907510
https://security.gentoo.org/glsa/202101-29
https://lists.debian.org/debian-lts-announce/2021/02/msg00011.html
Source: MITRE
Published: 2021-01-05
Updated: 2021-07-20
Type: CWE-122
Base Score: 4.3
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 5.5
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 1.8
Severity: MEDIUM