CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's media subsystem, specifically in the wave5 encoder processing, where improper handling of buffer states can lead to a self-referential loop in the ready queue. This flaw could allow malicious userspace applications to exploit the buffer management, potentially leading to memory corruption or denial of service. Organizations utilizing Linux systems with media processing capabilities should prioritize addressing this vulnerability to mitigate risks associated with buffer management errors.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: media: chips-media: wave5: Move src_buf Removal to finish_encode During encoder processing, there is a case where the IRQ response could return the buffer back to userspace via v4l2_m2m_buf_done call. In this time, userspace could queue up this same buffer before start_encode removes the index from the ready queue. This would then lead to a case where the buffer in the ready queue could be a self loop due to the WRITE_ONCE(prev->next, new) call in __list_add. When __list_del is finally called, the loop is already made so nothing points back to ready queue list head and pointers are poisoned. A buffer should not be marked as DONE before the buffer is removed from m2m ready queue. Move removal entirely to finish_encode.