CVE-2026-68180
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: intel_th: fix MSC output device reference leak intel_th_output_open() looks up the output device with bus_find_device_by_devt(), which returns the device with a reference that must be dropped after use. commit 95fc36a234da ("intel_th: fix device leak on output open()") attempted to drop the reference from intel_th_output_release(). However, a successful open replaces file->f_op with the output driver file operations before returning, so close runs the output driver release callback instead. For MSC outputs, close runs intel_th_msc_release(), which only removes the per-file iterator and does not drop the device reference taken by intel_th_output_open(). Consequently, every successful MSC output open leaks one device reference. Drop the device reference from intel_th_msc_release(), which is the release path actually used for MSC output files. Remove the now-unused intel_th_output_release() callback from intel_th_output_fops.
Severity
Not scored
CVSS score
Not available
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-08-10 13:20:04.967000
Last modified
2026-11-06 17:19:20.770000
View original CVE JSON
{
"id": "CVE-2026-68180",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-08-10T13:20:04.967",
"lastModified": "2026-11-06T17:19:20.770",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nintel_th: fix MSC output device reference leak\n\nintel_th_output_open() looks up the output device with\nbus_find_device_by_devt(), which returns the device with a reference that\nmust be dropped after use.\n\ncommit 95fc36a234da (\"intel_th: fix device leak on output open()\")\nattempted to drop the reference from intel_th_output_release(). However,\na successful open replaces file->f_op with the output driver file\noperations before returning, so close runs the output driver release\ncallback instead.\n\nFor MSC outputs, close runs intel_th_msc_release(), which only removes\nthe per-file iterator and does not drop the device reference taken by\nintel_th_output_open(). Consequently, every successful MSC output open\nleaks one device reference.\n\nDrop the device reference from intel_th_msc_release(), which is the\nrelease path actually used for MSC output files. Remove the now-unused\nintel_th_output_release() callback from intel_th_output_fops."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
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"defaultStatus": "unaffected",
"programFiles": [
"drivers/hwtracing/intel_th/core.c",
"drivers/hwtracing/intel_th/msu.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/hwtracing/intel_th/core.c",
"drivers/hwtracing/intel_th/msu.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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},
{
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},
{
"version": "7.2",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-11-06T16:43:45.453776Z",
"id": "CVE-2026-68180",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
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