Answer in brief
CVE-2026-68216 records a Unknown severity 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). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. 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). 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 |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 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.
Answer in brief
CVE-2026-68216 records a Unknown severity 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). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. 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). 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 |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 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.