This update for xorg-x11-server fixes the following issues:
CVE-2021-4009: The handler for the CreatePointerBarrier request of the XFixes
extension does not properly validate the request length leading to out of
bounds memory write. (bsc#1190487)
CVE-2021-4011: The handlers for the RecordCreateContext and RecordRegisterClients
requests of the Record extension do not properly validate the request
length leading to out of bounds memory write. (bsc#1190489)