rendering/RenderBox.cpp in WebCore in WebKit before r86862, as used in Google Chrome before 11.0.696.71, does not properly render floats, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via unknown vectors that lead to a "stale pointer."
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.