CVE-2015-8615

Name	CVE-2015-8615
Description	The hvm_set_callback_via function in arch/x86/hvm/irq.c in Xen 4.6 does not limit the number of printk console messages when logging the new callback method, which allows local HVM guest OS users to cause a denial of service via a large number of changes to the callback method (HVM_PARAM_CALLBACK_IRQ).
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
References	DLA-479-1
Debian Bugs	823620

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
xen (PTS)	buster, buster (security)	4.11.4+107-gef32c7afa2-1	fixed
	bullseye	4.14.5+24-g87d90d511c-1	fixed
	bullseye (security)	4.14.5+86-g1c354767d5-1	fixed
	bookworm, sid	4.16.2+90-g0d39a6d1ae-1	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
xen	source	squeeze	(not affected)
xen	source	wheezy	4.1.6.1-1+deb7u1	DLA-479-1
xen	source	jessie	(not affected)
xen	source	(unstable)	4.8.0~rc3-1		823620

Notes

[jessie] - xen <not-affected> (Only affects 4.6)
[wheezy] - xen <not-affected> (Only affects 4.6)
[squeeze] - xen <not-affected> (Only affects 4.6)
http://xenbits.xen.org/xsa/advisory-169.html