Answer in brief
CVE-2026-68216 records a High severity (CVSS 7.8) vulnerability in media: pwc: Return queued buffers on start_streaming() failure. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 <f2f9fcacd81953dde6cb86312ab13ca13e689664 || >=ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 <5d7cc2634c3843a1414a0f6407aa17f1f91dee60 || >=ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 <cb16b79a2be2cec9c3ebe4147490817c4d8b1de3 || >=ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 <a4f8f629983f643333e49df90557805469bcbb25 || >=ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 <975b2ee20e569d47821e4f6c9761b4664d48a6a4 | f2f9fcacd81953dde6cb86312ab13ca13e689664, 5d7cc2634c3843a1414a0f6407aa17f1f91dee60, cb16b79a2be2cec9c3ebe4147490817c4d8b1de3, a4f8f629983f643333e49df90557805469bcbb25, 975b2ee20e569d47821e4f6c9761b4664d48a6a4 |
| Linux/Linuxgeneric | 3.5 | Not reported |
| Linux/Linuxgeneric | >=ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 <d552852bf76b7dfb35b4593fc874d8dd2f1b1bf3 || >=ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 <0362ae30b61b3053ee3095c1b8f179197ec4f539 || >=ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 <fa78e590852751d3ad32f33f6b4e210fe6ccbe9b || >=ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 <f2f9fcacd81953dde6cb86312ab13ca13e689664 || >=ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 <5d7cc2634c3843a1414a0f6407aa17f1f91dee60 || >=ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 <cb16b79a2be2cec9c3ebe4147490817c4d8b1de3 || >=ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 <a4f8f629983f643333e49df90557805469bcbb25 || >=ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478 <975b2ee20e569d47821e4f6c9761b4664d48a6a4 | d552852bf76b7dfb35b4593fc874d8dd2f1b1bf3, 0362ae30b61b3053ee3095c1b8f179197ec4f539, fa78e590852751d3ad32f33f6b4e210fe6ccbe9b, f2f9fcacd81953dde6cb86312ab13ca13e689664, 5d7cc2634c3843a1414a0f6407aa17f1f91dee60, cb16b79a2be2cec9c3ebe4147490817c4d8b1de3, a4f8f629983f643333e49df90557805469bcbb25, 975b2ee20e569d47821e4f6c9761b4664d48a6a4 |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
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").
Quoted source text, attributed separately from HOL analysis.