Buffer overflow in X.org libXxf86vm 1.1.2 and earlier allows X servers to cause a denial of service (crash) and possibly execute arbitrary code via crafted length or index values to the XF86VidModeGetGammaRamp function.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.ubuntu.com/usn/USN-1870-1 | vendor advisory |
| http://lists.fedoraproject.org/pipermail/package-announce/2013-May/106872.html | vendor advisory |
| http://www.debian.org/security/2013/dsa-2692 | vendor advisory |
| http://lists.opensuse.org/opensuse-updates/2013-06/msg00165.html | vendor advisory |
| http://www.openwall.com/lists/oss-security/2013/05/23/3 | mailing list |
| http://www.x.org/wiki/Development/Security/Advisory-2013-05-23 | vendor advisory |