CVE-2026-80826
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: USB: c67x00: fix use-after-free in c67x00_add_iso_urb() When TD creation fails for the last packet of an isochronous URB, c67x00_add_iso_urb() gives the URB back before updating the endpoint scheduling state. c67x00_giveback_urb() frees the URB private data, and the completion callback may release the final URB reference. The following accesses to urbp->ep_data, urb->interval, and urbp->cnt can therefore use freed memory. Update next_frame and cnt before giving back the failed final packet, making the giveback the last operation that uses the URB and its private data.
Severity
Not scored
CVSS score
Not available
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-09-04 16:18:10.543000
Last modified
2026-10-19 09:17:17.560000
View original CVE JSON
{
"id": "CVE-2026-80826",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-09-04T16:18:10.543",
"lastModified": "2026-10-19T09:17:17.560",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: c67x00: fix use-after-free in c67x00_add_iso_urb()\n\nWhen TD creation fails for the last packet of an isochronous URB,\nc67x00_add_iso_urb() gives the URB back before updating the endpoint\nscheduling state.\n\nc67x00_giveback_urb() frees the URB private data, and the completion\ncallback may release the final URB reference. The following accesses to\nurbp->ep_data, urb->interval, and urbp->cnt can therefore use freed\nmemory.\n\nUpdate next_frame and cnt before giving back the failed final packet,\nmaking the giveback the last operation that uses the URB and its private\ndata."
}
],
"affected": [
{
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"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/usb/c67x00/c67x00-sched.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
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"versionType": "git",
"status": "affected"
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"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "2.6.26",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.26",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.10.269",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.220",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.187",
"lessThanOrEqual": "6.1.*",
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"status": "unaffected"
},
{
"version": "6.6.156",
"lessThanOrEqual": "6.6.*",
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"status": "unaffected"
},
{
"version": "6.12.108",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.49",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
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},
{
"version": "7.1.13",
"lessThanOrEqual": "7.1.*",
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},
{
"version": "7.2.3",
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"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.3",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {},
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}