An AVX-512-optimized implementation of the mempcpy function in the GNU C Library (aka glibc or libc6) 2.27 and earlier may write data beyond the target buffer, leading to a buffer overflow in __mempcpy_avx512_no_vzeroupper.
www.securityfocus.com/bid/104256
access.redhat.com/errata/RHBA-2019:0327
access.redhat.com/errata/RHSA-2018:3092
security.netapp.com/advisory/ntap-20190329-0001/
security.netapp.com/advisory/ntap-20190401-0001/
sourceware.org/bugzilla/show_bug.cgi?id=23196
usn.ubuntu.com/4416-1/
www.exploit-db.com/exploits/44750/
www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html