CVE-2026-68369 (GCVE-0-2026-68369)
Vulnerability from cvelistv5
Published
2026-08-10 12:03
Modified
2026-08-19 16:34
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
usb: gadget: printer: fix infinite loop in printer_read()
printer_read() uses the same variable for the requested copy size and
the number of bytes actually copied to user space. copy_to_user()
returns the number of bytes not copied, so when it fails to copy
anything, the computed copied length becomes zero.
In that case len, buf, current_rx_bytes and current_rx_buf are left
unchanged. If RX data is available and the user buffer remains
unwritable, the read loop can repeat indefinitely.
Track the copied length separately and return -EFAULT, or the number of
bytes already copied, if an iteration makes no progress.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: b185f01a9ab7af586133be2555298e960237359b Version: b185f01a9ab7af586133be2555298e960237359b Version: b185f01a9ab7af586133be2555298e960237359b Version: b185f01a9ab7af586133be2555298e960237359b Version: b185f01a9ab7af586133be2555298e960237359b Version: b185f01a9ab7af586133be2555298e960237359b Version: b185f01a9ab7af586133be2555298e960237359b Version: b185f01a9ab7af586133be2555298e960237359b |
||
{
"containers": {
"cna": {
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{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/usb/gadget/function/f_printer.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
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},
{
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},
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},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.1"
},
{
"lessThan": "4.1",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.265",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.216",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.148",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
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"vulnerable": true
},
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: printer: fix infinite loop in printer_read()\n\nprinter_read() uses the same variable for the requested copy size and\nthe number of bytes actually copied to user space. copy_to_user()\nreturns the number of bytes not copied, so when it fails to copy\nanything, the computed copied length becomes zero.\n\nIn that case len, buf, current_rx_bytes and current_rx_buf are left\nunchanged. If RX data is available and the user buffer remains\nunwritable, the read loop can repeat indefinitely.\n\nTrack the copied length separately and return -EFAULT, or the number of\nbytes already copied, if an iteration makes no progress."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-19T16:34:28.812Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/3f81197364b57e5318620c75f3bd63f405f60552"
},
{
"url": "https://git.kernel.org/stable/c/e225e2998e5a9b83c838dbbe4511fb0d63f88daf"
},
{
"url": "https://git.kernel.org/stable/c/3081b0e187065c3b9577e393ad664b12854aeaf3"
},
{
"url": "https://git.kernel.org/stable/c/994afccfdcceb73be33f69a8a8ea71e260c9eca5"
},
{
"url": "https://git.kernel.org/stable/c/e03597ad9494b500344076589aeaa6c6d2d381d3"
},
{
"url": "https://git.kernel.org/stable/c/4cde0b38cc0cb8b7dc17295801015148de37d1d2"
},
{
"url": "https://git.kernel.org/stable/c/e41bbbbb1740ce4d7270ab1cdeca13892d6a8d2e"
},
{
"url": "https://git.kernel.org/stable/c/c2e819be6a5c7f34344926b4bd7e3dfca58cf48a"
}
],
"title": "usb: gadget: printer: fix infinite loop in printer_read()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-68369",
"datePublished": "2026-08-10T12:03:46.845Z",
"dateReserved": "2026-07-30T09:28:09.386Z",
"dateUpdated": "2026-08-19T16:34:28.812Z",
"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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