CVE-2026-68228
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk6th percentile - higher than 6% of all known CVEs
Summary
In the Linux kernel, the chips-media wave5 driver has a bug where a buffer can be returned to userspace before being removed from the ready queue, leading to list corruption and pointer poisoning.
Risk Assessment
The risk includes potential system crashes or data corruption, disrupting encoder operation.
Recommendation
Update the Linux kernel to a version containing the fix that moves buffer removal to finish_encode.
Original NVD description (English source)
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.