CVE-2014-5148

Name	CVE-2014-5148
Description	Xen 4.4.x, when running on an ARM system and "handling an unknown system register access from 64-bit userspace," returns to an instruction of the trap handler for kernel space faults instead of an instruction that is associated with faults in 64-bit userspace, which allows local guest users to cause a denial of service (crash) and possibly gain privileges via a crafted process.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
xen (PTS)	bullseye	4.14.6-1	fixed
	bullseye (security)	4.14.5+94-ge49571868d-1	fixed
	bookworm	4.17.5+23-ga4e5191dc0-1+deb12u1	fixed
	bookworm (security)	4.17.5+23-ga4e5191dc0-1	fixed
	trixie, sid	4.20.0-1	fixed

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

Package	Type	Release	Fixed Version
xen	source	squeeze	(not affected)
xen	source	wheezy	(not affected)
xen	source	(unstable)	4.4.1-1

[wheezy] - xen <not-affected> (Vulnerable code not present)
[squeeze] - xen <not-affected> (Vulnerable code not present)