CVE-2012-6036

Publication date 23 November 2012

Last updated 24 July 2024

Description

The (1) memc_save_get_next_page, (2) tmemc_restore_put_page and (3) tmemc_restore_flush_page functions in the Transcendent Memory (TMEM) in Xen 4.0, 4.1, and 4.2 do not check for negative id pools, which allows local guest OS users to cause a denial of service (memory corruption and host crash) or possibly execute arbitrary code via unspecified vectors. NOTE: this issue was originally published as part of CVE-2012-3497, which was too general; CVE-2012-3497 has been SPLIT into this ID and others.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
xen	12.10 quantal	Ignored
	12.04 LTS precise	Ignored
	11.10 oneiric	Ignored
	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	Ignored end of life
	10.04 LTS lucid	Not affected
	8.04 LTS hardy	Not in release

Notes

seth-arnold

Xen team strongly recommends against TMEM use

mdeslaur

only 4.0 and higher ONLY installations where "tmem" is specified on the hypervisor command line are vulnerable. Most Xen installations do not do so. upstream says: "TMEM has been described by its maintainers as a technology preview, and is therefore not supported by them for use in production systems. Pending a full security audit of the code, the Xen.org security team recommends that Xen users do not enable TMEM." We will not be fixing this in Ubuntu. Marking as "ignored"