Integer overflow in the SkAutoSTArray implementation in include/core/SkTemplates.h in the filters implementation in Skia, as used in Google Chrome before 41.0.2272.76, allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors that trigger a reset action with a large count value, leading to an out-of-bounds write operation.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.