Use-after-free in receive_msg function via vectors involving BDAT commandsThe receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to execute arbitrary code or cause a denial of service via vectors involving BDAT commands. Infinite loop and stack exhaustion in receive_msg function via vectors involving BDAT commandsThe receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to cause a denial of service via vectors involving BDAT commands and an improper check for a '.' character signifying the end of the content, related to the bdat_getc function