A heap buffer overflow in SANE Backends before 1.0.30 may allow a malicious device connected to the same local network as the victim to execute arbitrary code, aka GHSL-2020-084.
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00079.html
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00003.html
https://lists.debian.org/debian-lts-announce/2020/08/msg00029.html
https://lists.debian.org/debian-lts-announce/2020/10/msg00010.html
https://securitylab.github.com/advisories/GHSL-2020-075-libsane