CVE-2026-64338 (GCVE-0-2026-64338)
Vulnerability from cvelistv5 – Published: 2026-07-25 08:50 – Updated: 2026-07-25 08:50
VLAI
EPSS
VEX
Title
USB: misc: uss720: unregister parport on probe failure
Summary
In the Linux kernel, the following vulnerability has been resolved:
USB: misc: uss720: unregister parport on probe failure
uss720_probe() registers a parport before reading the 1284 register used
to detect unsupported Belkin F5U002 adapters. If get_1284_register()
fails, the error path drops the driver private data and the USB device
reference, but leaves the parport device registered.
Leaving the port registered is more than a private allocation leak:
parport_register_port() has already reserved a parport number and
registered the parport bus device, while pp->private_data still points at
the private data that the common error path is about to release.
Undo the pre-announce registration in the get_1284_register() failure
branch before jumping to the common private-data cleanup path. Clear
priv->pp first, matching the disconnect path and avoiding a stale pointer
in the private data.
This issue was identified during our ongoing static-analysis research while
reviewing kernel code.
Severity
No CVSS data available.
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
04736c1bc32197f7d859e01a96ae80a16659931d , < 6bbb98bec71b577fda4f4b48f7aea5874b04a576
(git)
Affected: 4eaf2331a77996bbbaf2b824d452ac8ebda7e6e7 , < 93563243377f8e9b46cc94d9c4f06533dd31b141 (git) Affected: 8fc246a8a456679993df565d3c9e3da28030ee43 , < 1712fd71a5aaf81e47c747f180535fa963ad7830 (git) Affected: 10132ccf99f49b43aeb7470df50d72344a601ad6 , < 0b3073f40cc9f95d5ff0037eb0a06f5c1725a7ea (git) Affected: 3295f1b866bfbcabd625511968e8a5c541f9ab32 , < 5e62d7857fd51b908b8371062ee839739a086bbe (git) Affected: 3295f1b866bfbcabd625511968e8a5c541f9ab32 , < 729b68a5bad71220ae0914c8bdab9488ad5be6c8 (git) Affected: 3295f1b866bfbcabd625511968e8a5c541f9ab32 , < 48dd0b2ec9f2e97c486eb68cd0a64b25c1c3df3e (git) Affected: 3295f1b866bfbcabd625511968e8a5c541f9ab32 , < b4ecbdc4f8830f5586c4a5cfc384c00f20f8f8b3 (git) Affected: 02d13616ca30014ed96302e51a5b0e17664e58bc (git) Affected: dff3b01e91a3df93063b03d0f8dd5c40546687ec (git) Affected: 489d77fbd66375972a380d207f7eb39b00c4a67b (git) Affected: 5.10.221 , < 5.10.261 (semver) Affected: 5.15.162 , < 5.15.212 (semver) Affected: 6.1.96 , < 6.1.178 (semver) Affected: 6.6.36 , < 6.6.145 (semver) Affected: 4.19.317 , < 4.20 (semver) Affected: 5.4.279 , < 5.5 (semver) Affected: 6.9.7 , < 6.10 (semver) |
|
| Linux | Linux |
Affected:
6.10
Unaffected: 0 , < 6.10 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2-rc3 , ≤ * (original_commit_for_fix) |
{
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{
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"lessThanOrEqual": "6.6.*",
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"version": "6.6.145",
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"version": "7.1.4",
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},
{
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"status": "unaffected",
"version": "7.2-rc3",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
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"versionEndExcluding": "5.10.261",
"versionStartIncluding": "5.10.221",
"vulnerable": true
},
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},
{
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"versionStartIncluding": "6.1.96",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.145",
"versionStartIncluding": "6.6.36",
"vulnerable": true
},
{
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: misc: uss720: unregister parport on probe failure\n\nuss720_probe() registers a parport before reading the 1284 register used\nto detect unsupported Belkin F5U002 adapters. If get_1284_register()\nfails, the error path drops the driver private data and the USB device\nreference, but leaves the parport device registered.\n\nLeaving the port registered is more than a private allocation leak:\nparport_register_port() has already reserved a parport number and\nregistered the parport bus device, while pp-\u003eprivate_data still points at\nthe private data that the common error path is about to release.\n\nUndo the pre-announce registration in the get_1284_register() failure\nbranch before jumping to the common private-data cleanup path. Clear\npriv-\u003epp first, matching the disconnect path and avoiding a stale pointer\nin the private data.\n\nThis issue was identified during our ongoing static-analysis research while\nreviewing kernel code."
}
],
"providerMetadata": {
"dateUpdated": "2026-07-25T08:50:02.673Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/6bbb98bec71b577fda4f4b48f7aea5874b04a576"
},
{
"url": "https://git.kernel.org/stable/c/93563243377f8e9b46cc94d9c4f06533dd31b141"
},
{
"url": "https://git.kernel.org/stable/c/1712fd71a5aaf81e47c747f180535fa963ad7830"
},
{
"url": "https://git.kernel.org/stable/c/0b3073f40cc9f95d5ff0037eb0a06f5c1725a7ea"
},
{
"url": "https://git.kernel.org/stable/c/5e62d7857fd51b908b8371062ee839739a086bbe"
},
{
"url": "https://git.kernel.org/stable/c/729b68a5bad71220ae0914c8bdab9488ad5be6c8"
},
{
"url": "https://git.kernel.org/stable/c/48dd0b2ec9f2e97c486eb68cd0a64b25c1c3df3e"
},
{
"url": "https://git.kernel.org/stable/c/b4ecbdc4f8830f5586c4a5cfc384c00f20f8f8b3"
}
],
"title": "USB: misc: uss720: unregister parport on probe failure",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-64338",
"datePublished": "2026-07-25T08:50:02.673Z",
"dateReserved": "2026-07-19T15:36:31.781Z",
"dateUpdated": "2026-07-25T08:50:02.673Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-64338",
"date": "2026-07-26",
"epss": "0.00177",
"percentile": "0.07459"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-64338\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-25T10:17:15.717\",\"lastModified\":\"2026-07-25T10:17:15.717\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nUSB: misc: uss720: unregister parport on probe failure\\n\\nuss720_probe() registers a parport before reading the 1284 register used\\nto detect unsupported Belkin F5U002 adapters. If get_1284_register()\\nfails, the error path drops the driver private data and the USB device\\nreference, but leaves the parport device registered.\\n\\nLeaving the port registered is more than a private allocation leak:\\nparport_register_port() has already reserved a parport number and\\nregistered the parport bus device, while pp-\u003eprivate_data still points at\\nthe private data that the common error path is about to release.\\n\\nUndo the pre-announce registration in the get_1284_register() failure\\nbranch before jumping to the common private-data cleanup path. Clear\\npriv-\u003epp first, matching the disconnect path and avoiding a stale pointer\\nin the private data.\\n\\nThis issue was identified during our ongoing static-analysis research while\\nreviewing kernel code.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/usb/misc/uss720.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"04736c1bc32197f7d859e01a96ae80a16659931d\",\"lessThan\":\"6bbb98bec71b577fda4f4b48f7aea5874b04a576\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4eaf2331a77996bbbaf2b824d452ac8ebda7e6e7\",\"lessThan\":\"93563243377f8e9b46cc94d9c4f06533dd31b141\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8fc246a8a456679993df565d3c9e3da28030ee43\",\"lessThan\":\"1712fd71a5aaf81e47c747f180535fa963ad7830\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"10132ccf99f49b43aeb7470df50d72344a601ad6\",\"lessThan\":\"0b3073f40cc9f95d5ff0037eb0a06f5c1725a7ea\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3295f1b866bfbcabd625511968e8a5c541f9ab32\",\"lessThan\":\"5e62d7857fd51b908b8371062ee839739a086bbe\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3295f1b866bfbcabd625511968e8a5c541f9ab32\",\"lessThan\":\"729b68a5bad71220ae0914c8bdab9488ad5be6c8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3295f1b866bfbcabd625511968e8a5c541f9ab32\",\"lessThan\":\"48dd0b2ec9f2e97c486eb68cd0a64b25c1c3df3e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3295f1b866bfbcabd625511968e8a5c541f9ab32\",\"lessThan\":\"b4ecbdc4f8830f5586c4a5cfc384c00f20f8f8b3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"02d13616ca30014ed96302e51a5b0e17664e58bc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"dff3b01e91a3df93063b03d0f8dd5c40546687ec\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"489d77fbd66375972a380d207f7eb39b00c4a67b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.10.221\",\"lessThan\":\"5.10.261\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.15.162\",\"lessThan\":\"5.15.212\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.1.96\",\"lessThan\":\"6.1.178\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.6.36\",\"lessThan\":\"6.6.145\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.19.317\",\"lessThan\":\"4.20\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.4.279\",\"lessThan\":\"5.5\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.9.7\",\"lessThan\":\"6.10\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/usb/misc/uss720.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.10\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.10\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.96\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.39\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.4\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc3\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0b3073f40cc9f95d5ff0037eb0a06f5c1725a7ea\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1712fd71a5aaf81e47c747f180535fa963ad7830\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/48dd0b2ec9f2e97c486eb68cd0a64b25c1c3df3e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5e62d7857fd51b908b8371062ee839739a086bbe\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6bbb98bec71b577fda4f4b48f7aea5874b04a576\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/729b68a5bad71220ae0914c8bdab9488ad5be6c8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/93563243377f8e9b46cc94d9c4f06533dd31b141\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b4ecbdc4f8830f5586c4a5cfc384c00f20f8f8b3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
"suse_vex": {
"aggregate_severity": "not set",
"current_release_date": "2026-07-25T16:01:31Z",
"cve": "CVE-2026-64338",
"id": "CVE-2026-64338",
"initial_release_date": "2026-07-25T16:01:31Z",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-64338",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64338.json",
"version": "2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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