CVE-2012-3495

Publication date 23 November 2012

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors.

Read the notes from the security team

Status

Package Ubuntu Release Status
xen 12.10 quantal
Not affected
12.04 LTS precise
Fixed 4.1.2-2ubuntu2.4
11.10 oneiric
Fixed 4.1.1-2ubuntu4.4
11.04 natty Not in release
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
11.04 natty 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
11.04 natty Not in release
10.04 LTS lucid Not in release
8.04 LTS hardy
Not affected
xen-3.3 12.10 quantal Not in release
12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty
Not affected
10.04 LTS lucid
Not affected
8.04 LTS hardy Not in release

Notes

mdeslaur

This is XSA-13 only affects 4.1