In the Linux kernel, the following vulnerability has been resolved:
ASoC: SOF: ipc3-control: Validate size in snd_sof_update_control
In snd_sof_update_control(), firmware-provided cdata->num_elems is checked against local_cdata->data->size but never against the actual allocation size. If local_cdata->data->size was previously set to an inconsistent value, the memcpy could write past the allocated buffer.
Add a bounds check to ensure num_elems fits within the available space in the ipc_control_data allocation before copying.
References
- https://git.kernel.org/stable/c/1dc25a3e06364f48c4ef06016852f8b82425151a
- https://git.kernel.org/stable/c/2a591bf6fd41fd14bdae689aafac4a9ee702c23c
- https://git.kernel.org/stable/c/390aa4c9339bb0ec0bc8d554e830faf93ca9d49e
- https://git.kernel.org/stable/c/d3abaedf6a58469610136d2dace1a85cddf7afcf
- https://git.kernel.org/stable/c/ecf67f1302f2080b4d241b973364aacda70ad740
- https://git.kernel.org/stable/c/ee781058cd4d71e4449f41cbe6a3b8c59daa2c51