In the Android kernel in F2FS driver there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with system execution privileges needed. User interaction is not needed for exploitation.
https://usn.ubuntu.com/4527-1/
https://usn.ubuntu.com/4526-1/
https://source.android.com/security/bulletin/pixel/2019-09-01
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html