Integer overflow in Google Picasa 3.9.140 Build 239 and Build 248 allows remote attackers to execute arbitrary code via unspecified vectors related to "phase one 0x412 tag," which triggers a heap-based buffer overflow.
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.