Description
In the Linux kernel, the following vulnerability has been resolved: media: pwc: 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. pwc's start_streaming() had two early returns that hit this trap: -ENODEV when the USB device was already disconnected, and -ERESTARTSYS when mutex_lock_interruptible() was interrupted by a signal. Call the existing pwc_cleanup_queued_bufs() helper with VB2_BUF_STATE_QUEUED before returning (matching the state already used by the pwc_isoc_init() error path in the same function). This mirrors the uvcvideo fix in commit 4cf3b6fd54eb ("media: uvcvideo: Return queued buffers on start_streaming() failure").
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 to < d552852bf76b7dfb35b4593fc874d8dd2f1b1bf3affectedceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 to < 0362ae30b61b3053ee3095c1b8f179197ec4f539affectedceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 to < fa78e590852751d3ad32f33f6b4e210fe6ccbe9baffectedceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 to < f2f9fcacd81953dde6cb86312ab13ca13e689664affectedceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 to < 5d7cc2634c3843a1414a0f6407aa17f1f91dee60affectedceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 to < cb16b79a2be2cec9c3ebe4147490817c4d8b1de3affectedceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 to < a4f8f629983f643333e49df90557805469bcbb25affectedceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 to < 975b2ee20e569d47821e4f6c9761b4664d48a6a4affected
Linux Linux
Default version status: affected
3.5affected0 to < 3.5unaffected5.10.265 to ≤ 5.10.*unaffected5.15.216 to ≤ 5.15.*unaffected6.1.183 to ≤ 6.1.*unaffected6.6.148 to ≤ 6.6.*unaffected6.12.101 to ≤ 6.12.*unaffected6.18.42 to ≤ 6.18.*unaffected7.1.6 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/d552852bf76b7dfb35b4593fc874d8dd2f1b1bf3 ↗
- https://git.kernel.org/stable/c/0362ae30b61b3053ee3095c1b8f179197ec4f539 ↗
- https://git.kernel.org/stable/c/fa78e590852751d3ad32f33f6b4e210fe6ccbe9b ↗
- https://git.kernel.org/stable/c/f2f9fcacd81953dde6cb86312ab13ca13e689664 ↗
- https://git.kernel.org/stable/c/5d7cc2634c3843a1414a0f6407aa17f1f91dee60 ↗
- https://git.kernel.org/stable/c/cb16b79a2be2cec9c3ebe4147490817c4d8b1de3 ↗
- https://git.kernel.org/stable/c/a4f8f629983f643333e49df90557805469bcbb25 ↗
- https://git.kernel.org/stable/c/975b2ee20e569d47821e4f6c9761b4664d48a6a4 ↗