CVE-2012-6036 Memory corruption in n/a
Local guest OS users can exploit missing checks in Xen TMEM to cause host crashes or execute arbitrary code via memory corruption.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2012-6036?
CVE-2012-6036 is a medium-severity memory corruption vulnerability in Xen Xen, published on 23 Nov 2012. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-264
Which versions are affected by CVE-2012-6036?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2012-6036?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2012-6036 being exploited?
There is no known exploitation of CVE-2012-6036 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as DEBIAN-CVE-2012-6036, GHSA-4m7r-jfv6-r27r.