CVE-2026-64345 (GCVE-0-2026-64345)
Vulnerability from cvelistv5 – Published: 2026-07-25 08:50 – Updated: 2026-07-25 08:50
VLAI
EPSS
VEX
Title
usb: gadget: f_printer: take kref only for successful open
Summary
In the Linux kernel, the following vulnerability has been resolved:
usb: gadget: f_printer: take kref only for successful open
printer_open() returns -EBUSY when the character device is already
open, but it increments dev->kref regardless of the return value. VFS
does not call ->release() for a failed open, so every rejected second
open permanently leaks one reference.
Move kref_get() into the successful-open branch.
Severity
No CVSS data available.
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
e8d5f92b8d30bb4ade76494490c3c065e12411b1 , < 94ec20d97aa51547965a539f660a1fe79c6929a3
(git)
Affected: e8d5f92b8d30bb4ade76494490c3c065e12411b1 , < 75c0ad13e136961328253742501b4efc3988a587 (git) Affected: e8d5f92b8d30bb4ade76494490c3c065e12411b1 , < bf20c94fa6aaff945f0ae3a23f3212cd299f28d9 (git) Affected: e8d5f92b8d30bb4ade76494490c3c065e12411b1 , < 8a5eba992c862b0c94411eecf9b7121e8636db38 (git) Affected: e8d5f92b8d30bb4ade76494490c3c065e12411b1 , < 7f1f24c367938c5537e2308bf9a965f051d14774 (git) Affected: e8d5f92b8d30bb4ade76494490c3c065e12411b1 , < 30adce93d5c4a5a1ec29d9249e3fdfcc391d406b (git) Affected: 25c95c6bd4dc50a3c20de0fa7f450ea02b2320fc (git) Affected: 4a47581cf010dc351d8069978080fdb000c0776d (git) Affected: d9fe88b2a38dc700bf5bd3a09c7cd11bbc248367 (git) Affected: cedb0187b8ba929c3f76f28e6bc25804d65f8a54 (git) Affected: e9e791f5c39ab30e374a3b1a9c25ca7ff24988f3 (git) Affected: 34f026263889e2827e04acdc3a0eb9ecbd191ef0 (git) Affected: 5f845e5d18d151230476cf90aa46449f69ba2ef1 (git) Affected: 4.4.241 , < 4.5 (semver) Affected: 4.9.241 , < 4.10 (semver) Affected: 4.14.203 , < 4.15 (semver) Affected: 4.19.154 , < 4.20 (semver) Affected: 5.4.73 , < 5.5 (semver) Affected: 5.8.17 , < 5.9 (semver) Affected: 5.9.2 , < 5.10 (semver) |
|
| Linux | Linux |
Affected:
5.10
Unaffected: 0 , < 5.10 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (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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},
{
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},
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"versionType": "original_commit_for_fix"
}
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],
"cpeApplicability": [
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_printer: take kref only for successful open\n\nprinter_open() returns -EBUSY when the character device is already\nopen, but it increments dev-\u003ekref regardless of the return value. VFS\ndoes not call -\u003erelease() for a failed open, so every rejected second\nopen permanently leaks one reference.\n\nMove kref_get() into the successful-open branch."
}
],
"providerMetadata": {
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},
{
"url": "https://git.kernel.org/stable/c/30adce93d5c4a5a1ec29d9249e3fdfcc391d406b"
}
],
"title": "usb: gadget: f_printer: take kref only for successful open",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
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"datePublished": "2026-07-25T08:50:07.069Z",
"dateReserved": "2026-07-19T15:36:31.781Z",
"dateUpdated": "2026-07-25T08:50:07.069Z",
"state": "PUBLISHED"
},
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VFS\\ndoes not call -\u003erelease() for a failed open, so every rejected second\\nopen permanently leaks one reference.\\n\\nMove kref_get() into the successful-open branch.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/usb/gadget/function/f_printer.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"e8d5f92b8d30bb4ade76494490c3c065e12411b1\",\"lessThan\":\"94ec20d97aa51547965a539f660a1fe79c6929a3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e8d5f92b8d30bb4ade76494490c3c065e12411b1\",\"lessThan\":\"75c0ad13e136961328253742501b4efc3988a587\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e8d5f92b8d30bb4ade76494490c3c065e12411b1\",\"lessThan\":\"bf20c94fa6aaff945f0ae3a23f3212cd299f28d9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e8d5f92b8d30bb4ade76494490c3c065e12411b1\",\"lessThan\":\"8a5eba992c862b0c94411eecf9b7121e8636db38\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e8d5f92b8d30bb4ade76494490c3c065e12411b1\",\"lessThan\":\"7f1f24c367938c5537e2308bf9a965f051d14774\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e8d5f92b8d30bb4ade76494490c3c065e12411b1\",\"lessThan\":\"30adce93d5c4a5a1ec29d9249e3fdfcc391d406b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"25c95c6bd4dc50a3c20de0fa7f450ea02b2320fc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4a47581cf010dc351d8069978080fdb000c0776d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d9fe88b2a38dc700bf5bd3a09c7cd11bbc248367\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"cedb0187b8ba929c3f76f28e6bc25804d65f8a54\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e9e791f5c39ab30e374a3b1a9c25ca7ff24988f3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"34f026263889e2827e04acdc3a0eb9ecbd191ef0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5f845e5d18d151230476cf90aa46449f69ba2ef1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4.4.241\",\"lessThan\":\"4.5\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.9.241\",\"lessThan\":\"4.10\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.14.203\",\"lessThan\":\"4.15\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.19.154\",\"lessThan\":\"4.20\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.4.73\",\"lessThan\":\"5.5\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.8.17\",\"lessThan\":\"5.9\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.9.2\",\"lessThan\":\"5.10\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/usb/gadget/function/f_printer.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.10\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.10\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"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/30adce93d5c4a5a1ec29d9249e3fdfcc391d406b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/75c0ad13e136961328253742501b4efc3988a587\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7f1f24c367938c5537e2308bf9a965f051d14774\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8a5eba992c862b0c94411eecf9b7121e8636db38\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/94ec20d97aa51547965a539f660a1fe79c6929a3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bf20c94fa6aaff945f0ae3a23f3212cd299f28d9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
"suse_vex": {
"aggregate_severity": "not set",
"current_release_date": "2026-07-25T16:01:20Z",
"cve": "CVE-2026-64345",
"id": "CVE-2026-64345",
"initial_release_date": "2026-07-25T16:01:20Z",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-64345",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64345.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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