media: pwc: Return queued buffers on start_streaming() failure
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").
CVE-2026-68216
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-68216
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478",
"lessThan": "d552852bf76b7dfb35b4593fc874d8dd2f1b1bf3",
"versionType": "git"
},
{
"status": "affected",
"version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478",
"lessThan": "0362ae30b61b3053ee3095c1b8f179197ec4f539",
"versionType": "git"
},
{
"status": "affected",
"version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478",
"lessThan": "fa78e590852751d3ad32f33f6b4e210fe6ccbe9b",
"versionType": "git"
},
{
"status": "affected",
"version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478",
"lessThan": "f2f9fcacd81953dde6cb86312ab13ca13e689664",
"versionType": "git"
},
{
"status": "affected",
"version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478",
"lessThan": "5d7cc2634c3843a1414a0f6407aa17f1f91dee60",
"versionType": "git"
},
{
"status": "affected",
"version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478",
"lessThan": "cb16b79a2be2cec9c3ebe4147490817c4d8b1de3",
"versionType": "git"
},
{
"status": "affected",
"version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478",
"lessThan": "a4f8f629983f643333e49df90557805469bcbb25",
"versionType": "git"
},
{
"status": "affected",
"version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478",
"lessThan": "975b2ee20e569d47821e4f6c9761b4664d48a6a4",
"versionType": "git"
}
],
"programFiles": [
"drivers/media/usb/pwc/pwc-if.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.5"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.5",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.265",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.216",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.148",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/media/usb/pwc/pwc-if.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-68216
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #41160 · Revision 1
- Added to Heist Feed
- Publisher date