CVE-2018-14678

Name	CVE-2018-14678
Description	An issue was discovered in the Linux kernel through 4.17.11, as used in Xen through 4.11.x. The xen_failsafe_callback entry point in arch/x86/entry/entry_64.S does not properly maintain RBX, which allows local users to cause a denial of service (uninitialized memory usage and system crash). Within Xen, 64-bit x86 PV Linux guest OS users can trigger a guest OS crash or possibly gain privileges.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-1529-1, DLA-1531-1, DSA-4308-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	buster	4.19.249-2	fixed
	buster (security)	4.19.304-1	fixed
	bullseye	5.10.209-2	fixed
	bullseye (security)	5.10.205-2	fixed
	bookworm	6.1.76-1	fixed
	bookworm (security)	6.1.85-1	fixed
	trixie	6.6.15-2	fixed
	sid	6.7.9-2	fixed

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

Package	Type	Release	Fixed Version	Origin
linux	source	jessie	3.16.59-1	DLA-1529-1
linux	source	stretch	4.9.110-3+deb9u5	DSA-4308-1
linux	source	(unstable)	4.17.14-1
linux-4.9	source	jessie	4.9.110-3+deb9u5~deb8u1	DLA-1531-1

https://xenbits.xen.org/xsa/advisory-274.html
https://git.kernel.org/linus/b3681dd548d06deb2e1573890829dff4b15abf46