CVE-2018-11237

Name	CVE-2018-11237
Description	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severity	medium (attack range: local)
Debian Bugs	899070

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
glibc (PTS)	jessie (security), jessie	2.19-18+deb8u10	vulnerable
	stretch	2.24-11+deb9u4	fixed
	stretch (security)	2.24-11+deb9u1	vulnerable
	buster	2.28-10	fixed
	bullseye	2.29-1	fixed
	sid	2.29-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Debian Bugs
eglibc	source	(unstable)	(unfixed)	medium
glibc	source	(unstable)	2.27-4	low	899070
glibc	source	stretch	2.24-11+deb9u4	medium

[jessie] - glibc <no-dsa> (Minor issue, can be fixed along in future DSA or point update)
https://sourceware.org/bugzilla/show_bug.cgi?id=23196