CVE-2026-68231

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

media: airspy: Return queued buffers on start_streaming() failure

The vb2 framework hands buffers to the driver via buf_queue() before

calling start_streaming(). If start_streaming() returns an error

without first returning those buffers via vb2_buffer_done(),

vb2_start_streaming() fires WARN_ON(owned_by_drv_count) and the queued

buffers leak.

airspy_start_streaming() returned -ENODEV early when the USB device had

been disconnected (s->udev == NULL) without returning any buffers that

buf_queue() had already accepted. Take v4l2_lock first and jump to the

existing err_clear_bit label, which already drains s->queued_bufs via

vb2_buffer_done(..., VB2_BUF_STATE_QUEUED) before unlocking.

This mirrors the uvcvideo fix in commit 4cf3b6fd54eb ("media: uvcvideo:

Return queued buffers on start_streaming() failure").

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References