CVE-2026-23447 (GCVE-0-2026-23447)
Vulnerability from cvelistv5
Published
2026-04-03 15:15
Modified
2026-04-13 06:07
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: usb: cdc_ncm: add ndpoffset to NDP32 nframes bounds check
The same bounds-check bug fixed for NDP16 in the previous patch also
exists in cdc_ncm_rx_verify_ndp32(). The DPE array size is validated
against the total skb length without accounting for ndpoffset, allowing
out-of-bounds reads when the NDP32 is placed near the end of the NTB.
Add ndpoffset to the nframes bounds check and use struct_size_t() to
express the NDP-plus-DPE-array size more clearly.
Compile-tested only.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 0fa81b304a7973a499f844176ca031109487dd31 Version: 0fa81b304a7973a499f844176ca031109487dd31 Version: 0fa81b304a7973a499f844176ca031109487dd31 Version: 0fa81b304a7973a499f844176ca031109487dd31 Version: 0fa81b304a7973a499f844176ca031109487dd31 Version: 8cf7db86a8984ffa3a3388a8df12bc0aa4c79bd7 Version: 4ca8b8855264cf1439cdab3da7049bd1e3c2a9e6 Version: a270ca35a9499b58366d696d3290eaa4697a42db |
||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/usb/cdc_ncm.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "125f932a76a97904ef8a555f1dd53e5d0e288c54",
"status": "affected",
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"versionType": "git"
},
{
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},
{
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"versionType": "git"
},
{
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"status": "affected",
"version": "0fa81b304a7973a499f844176ca031109487dd31",
"versionType": "git"
},
{
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"status": "affected",
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"versionType": "git"
},
{
"status": "affected",
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},
{
"status": "affected",
"version": "4ca8b8855264cf1439cdab3da7049bd1e3c2a9e6",
"versionType": "git"
},
{
"status": "affected",
"version": "a270ca35a9499b58366d696d3290eaa4697a42db",
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}
]
},
{
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"product": "Linux",
"programFiles": [
"drivers/net/usb/cdc_ncm.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.7"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.78",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.20",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.10",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.130",
"versionStartIncluding": "5.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.78",
"versionStartIncluding": "5.7",
"vulnerable": true
},
{
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{
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},
{
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"versionEndExcluding": "7.0",
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},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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},
{
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},
{
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"versionStartIncluding": "5.4.245",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: cdc_ncm: add ndpoffset to NDP32 nframes bounds check\n\nThe same bounds-check bug fixed for NDP16 in the previous patch also\nexists in cdc_ncm_rx_verify_ndp32(). The DPE array size is validated\nagainst the total skb length without accounting for ndpoffset, allowing\nout-of-bounds reads when the NDP32 is placed near the end of the NTB.\n\nAdd ndpoffset to the nframes bounds check and use struct_size_t() to\nexpress the NDP-plus-DPE-array size more clearly.\n\nCompile-tested only."
}
],
"providerMetadata": {
"dateUpdated": "2026-04-13T06:07:38.424Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/125f932a76a97904ef8a555f1dd53e5d0e288c54"
},
{
"url": "https://git.kernel.org/stable/c/af0d1613d6751489dbf9f69aac1123f0b1e566e5"
},
{
"url": "https://git.kernel.org/stable/c/a5bd5a2710310c965ea4153cba4210988a3454e2"
},
{
"url": "https://git.kernel.org/stable/c/de70da1fb1d152e981ecb3157f7ec2b633005c16"
},
{
"url": "https://git.kernel.org/stable/c/77914255155e68a20aa41175edeecf8121dac391"
}
],
"title": "net: usb: cdc_ncm: add ndpoffset to NDP32 nframes bounds check",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-23447",
"datePublished": "2026-04-03T15:15:30.495Z",
"dateReserved": "2026-01-13T15:37:46.019Z",
"dateUpdated": "2026-04-13T06:07:38.424Z",
"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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