CVE-2012-3516

Publication date 23 November 2012

Last updated 24 July 2024

Ubuntu priority

Description

The GNTTABOP_swap_grant_ref sub-operation in the grant table hypercall in Xen 4.2 and Citrix XenServer 6.0.2 allows local guest kernels or administrators to cause a denial of service (host crash) and possibly gain privileges via a crafted grant reference that triggers a write to an arbitrary hypervisor memory location.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
xen-3.3	12.10 quantal	Not in release
	12.04 LTS precise	Not in release
	11.10 oneiric	Not in release
	10.04 LTS lucid	Not affected
	8.04 LTS hardy	Not in release
xen	12.10 quantal	Not affected
	12.04 LTS precise	Not affected
	11.10 oneiric	Not affected
	10.04 LTS lucid	Not in release
	8.04 LTS hardy	Not in release
xen-3.1	12.10 quantal	Not in release
	12.04 LTS precise	Not in release
	11.10 oneiric	Not in release
	10.04 LTS lucid	Not in release
	8.04 LTS hardy	Not affected
xen-3.2	12.10 quantal	Not in release
	12.04 LTS precise	Not in release
	11.10 oneiric	Not in release
	10.04 LTS lucid	Not in release
	8.04 LTS hardy	Not affected

Notes

seth-arnold

Hypercall was added in 4.2 Warning: for raring, version '4.2.0-1ubuntu2' is in -proposed is this version vulnerable or patched?

mdeslaur

introduced by http://xenbits.xen.org/hg/xen-unstable.hg/rev/d115844ebfbb fixed by http://xenbits.xen.org/hg/xen-unstable.hg/rev/93e5a791d076

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
xen	Upstream: http://xenbits.xen.org/hg/xen-unstable.hg/rev/93e5a791d076