CVE-2024-50288 Information

Description

In the Linux kernel the following vulnerability has been resolved:

media: vivid: fix buffer overwrite when using > 32 buffers

The maximum number of buffers that can be requested was increased to 64 for the video capture queue. But video capture used a must_blank array that was still sized for 32 (VIDEO_MAX_FRAME). This caused an out-of-bounds write when using buffer indices >= 32.

Create a new define MAX_VID_CAP_BUFFERS that is used to access the must_blank array and set max_num_buffers for the video capture queue.

This solves a crash reported by:

https://bugzilla.kernel.org/show_bug.cgi?id=219258

Reference

https://git.kernel.org/stable/c/e6bacd8f2178b22859fe6d9f755f19dfcd9d3862 https://git.kernel.org/stable/c/96d8569563916fe2f8fe17317e20e43f54f9ba4b