CVE-2026-64454 (GCVE-0-2026-64454)
Vulnerability from cvelistv5
Published
2026-07-25 08:51
Modified
2026-08-17 04:55
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
usb: dwc3: run gadget disconnect from sleepable suspend context
dwc3_gadget_suspend() takes dwc->lock with IRQs disabled and then calls
dwc3_disconnect_gadget(). For async callbacks that helper only uses
plain spin_unlock()/spin_lock(), so the gadget ->disconnect() callback
still runs with IRQs disabled and any sleepable callback trips Lockdep.
This issue was found by our static analysis tool and then manually
reviewed against the current tree.
The grounded PoC kept the dwc3_gadget_suspend() ->
dwc3_disconnect_gadget() -> gadget_driver->disconnect() chain, and
Lockdep reported:
BUG: sleeping function called from invalid context
gadget_disconnect+0x21/0x39 [vuln_msv]
dwc3_gadget_suspend.constprop.0+0x2b/0x42 [vuln_msv]
Keep the disconnect callback selection in one common helper, but add a
sleepable suspend-side wrapper which snapshots the callback under
dwc->lock and then runs it after spin_unlock_irqrestore(). The regular
event path still uses the existing spin_unlock()/spin_lock() window.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 20351ddb1f41cfb3ae20e105425ef43a28393d76 Version: ad43004fd5326bec4466ecc8a07fe0e570b553ca Version: c8540870af4ce6ddeb27a7bb5498b75fb29b643c Version: c8540870af4ce6ddeb27a7bb5498b75fb29b643c Version: c8540870af4ce6ddeb27a7bb5498b75fb29b643c Version: c8540870af4ce6ddeb27a7bb5498b75fb29b643c Version: c8540870af4ce6ddeb27a7bb5498b75fb29b643c Version: 06684c72b6b153dc434bb6ccebbb49f4cd812b5e Version: 5.15.128 ≤ Version: 6.1.30 ≤ Version: 6.3.4 ≤ |
||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/usb/dwc3/gadget.c"
],
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},
{
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"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.4"
},
{
"lessThan": "6.4",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.96",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.39",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
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"vulnerable": true
},
{
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{
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{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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{
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{
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: run gadget disconnect from sleepable suspend context\n\ndwc3_gadget_suspend() takes dwc-\u003elock with IRQs disabled and then calls\ndwc3_disconnect_gadget(). For async callbacks that helper only uses\nplain spin_unlock()/spin_lock(), so the gadget -\u003edisconnect() callback\nstill runs with IRQs disabled and any sleepable callback trips Lockdep.\n\nThis issue was found by our static analysis tool and then manually\nreviewed against the current tree.\n\nThe grounded PoC kept the dwc3_gadget_suspend() -\u003e\ndwc3_disconnect_gadget() -\u003e gadget_driver-\u003edisconnect() chain, and\nLockdep reported:\n\n BUG: sleeping function called from invalid context\n gadget_disconnect+0x21/0x39 [vuln_msv]\n dwc3_gadget_suspend.constprop.0+0x2b/0x42 [vuln_msv]\n\nKeep the disconnect callback selection in one common helper, but add a\nsleepable suspend-side wrapper which snapshots the callback under\ndwc-\u003elock and then runs it after spin_unlock_irqrestore(). The regular\nevent path still uses the existing spin_unlock()/spin_lock() window."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T04:55:58.408Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/b399be2958456efe1b64b19c55a54a24e9035769"
},
{
"url": "https://git.kernel.org/stable/c/48958478cb8dbc429a5b19f36e866b63d6297d1d"
},
{
"url": "https://git.kernel.org/stable/c/5e5798880eb1533a7de6fb68eb14b2d8202ebf76"
},
{
"url": "https://git.kernel.org/stable/c/e0e4f15d4225fb7156cc0e3c21eb8953114f9b89"
},
{
"url": "https://git.kernel.org/stable/c/c4e232bd07fe2b69a6e5c380db41dd36b95e0524"
},
{
"url": "https://git.kernel.org/stable/c/642e04f5c292d04070ae6e4374fbf14cc40a2465"
},
{
"url": "https://git.kernel.org/stable/c/010382937fb69892b3469ac4d30af072262f59e8"
}
],
"title": "usb: dwc3: run gadget disconnect from sleepable suspend context",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-64454",
"datePublished": "2026-07-25T08:51:23.212Z",
"dateReserved": "2026-07-19T15:36:31.789Z",
"dateUpdated": "2026-08-17T04:55:58.408Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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