Security Information / 2012 / Security Information -- DSA-2508-1 kfreebsd-8

Debian Security Advisory

DSA-2508-1 kfreebsd-8 -- privilege escalation

Date Reported:

22 Jul 2012

Affected Packages:

kfreebsd-8

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 677297.
In Mitre's CVE dictionary: CVE-2012-0217.

More information:

Rafal Wojtczuk from Bromium discovered that FreeBSD wasn't handling correctly uncanonical return addresses on Intel amd64 CPUs, allowing privilege escalation to kernel for local users.

For the stable distribution (squeeze), this problem has been fixed in version 8.1+dfsg-8+squeeze3.

For the testing distribution (wheezy), this problem has been fixed in version 8.3-4.

For the unstable distribution (sid), this problem has been fixed in version 8.3-4.

We recommend that you upgrade your kfreebsd-8 packages.