A flaw was found in libwebp in versions before 1.0.1. An out-of-bounds read was found in function ChunkAssignData. The highest threat from this vulnerability is to data confidentiality and to the service availability.
https://www.debian.org/security/2021/dsa-4930
https://support.apple.com/kb/HT212601
https://security.netapp.com/advisory/ntap-20211112-0001/
https://lists.debian.org/debian-lts-announce/2021/06/msg00006.html
https://lists.debian.org/debian-lts-announce/2021/06/msg00005.html