CVE-2024-49415

La escritura fuera de los límites en libsaped.so anterior a SMR Dec-2024 Release 1 permite a atacantes remotos ejecutar código arbitrario.

There is an out-of-bounds write in the Monkey's Audio (APE) decoder on the Samsung S24. The function saped_rec in libsaped.so writes to a dmabuf allocated by the C2 media service, which always appears to have size 0x120000. While the maximum blocksperframe value extracted by libsapedextractor is also limited to 0x120000, saped_rec can write up to 3 * blocksperframe bytes out, if the bytes per sample of the input is 24. This means that an APE file with a large blocksperframe size can substantially overflow this buffer. Note that this is a fully-remote (0-click) bug on the Samsung S24 if Google Messages is configured for RCS (the default configuration on this device), as the transcription service decodes incoming audio before a user interacts with the message for transcription purposes.