CVE-2026-92480 (GCVE-0-2026-92480)
Vulnerability from cvelistv5
Published
2026-09-17 16:09
Modified
2026-10-30 12:35
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
scsi: ufs: core: Validate string descriptors
The string descriptor length includes a two-byte header while the UTF-16
payload starts after it. utf16s_to_utf8s() expects a count of UTF-16 code
units, not bytes. Passing the payload byte count can make it read beyond
the descriptor buffer.
Validate that the payload has an even byte count, pass a code-unit count to
the converter, and allocate sufficient UTF-8 output space.
The raw string buffer starts after the descriptor header but its size is
bLength. Copying bLength bytes from that pointer can read beyond the
response buffer.
Allocate a zeroed bLength-sized buffer and copy only the UTF-16
payload. This preserves the raw buffer size consumed by the RPMB device-ID
ABI while avoiding the overread.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 4b828fe156a662a4b6135019bf077040340f299b Version: 4b828fe156a662a4b6135019bf077040340f299b Version: 4b828fe156a662a4b6135019bf077040340f299b Version: 4b828fe156a662a4b6135019bf077040340f299b Version: 4b828fe156a662a4b6135019bf077040340f299b Version: 4b828fe156a662a4b6135019bf077040340f299b |
||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/ufs/core/ufshcd.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "22c076f72ad67d89dab58d9c97a17c33e8130e82",
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"version": "4b828fe156a662a4b6135019bf077040340f299b",
"versionType": "git"
},
{
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"versionType": "git"
},
{
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"version": "4b828fe156a662a4b6135019bf077040340f299b",
"versionType": "git"
},
{
"lessThan": "f3480c59f4ce97d831e9d06f5a2b9c20547ed1a4",
"status": "affected",
"version": "4b828fe156a662a4b6135019bf077040340f299b",
"versionType": "git"
},
{
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},
{
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}
]
},
{
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"product": "Linux",
"programFiles": [
"drivers/ufs/core/ufshcd.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.4"
},
{
"lessThan": "5.4",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.191",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.191",
"versionStartIncluding": "5.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.160",
"versionStartIncluding": "5.4",
"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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"versionStartIncluding": "5.4",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ufs: core: Validate string descriptors\n\nThe string descriptor length includes a two-byte header while the UTF-16\npayload starts after it. utf16s_to_utf8s() expects a count of UTF-16 code\nunits, not bytes. Passing the payload byte count can make it read beyond\nthe descriptor buffer.\n\nValidate that the payload has an even byte count, pass a code-unit count to\nthe converter, and allocate sufficient UTF-8 output space.\n\nThe raw string buffer starts after the descriptor header but its size is\nbLength. Copying bLength bytes from that pointer can read beyond the\nresponse buffer.\n\nAllocate a zeroed bLength-sized buffer and copy only the UTF-16\npayload. This preserves the raw buffer size consumed by the RPMB device-ID\nABI while avoiding the overread."
}
],
"providerMetadata": {
"dateUpdated": "2026-10-30T12:35:36.682Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/22c076f72ad67d89dab58d9c97a17c33e8130e82"
},
{
"url": "https://git.kernel.org/stable/c/566109f1ee4e389b4effab43b0ce1fdab302e9de"
},
{
"url": "https://git.kernel.org/stable/c/02dd1a65dff842d9360a38ebe243dc8f6adbbaf5"
},
{
"url": "https://git.kernel.org/stable/c/f3480c59f4ce97d831e9d06f5a2b9c20547ed1a4"
},
{
"url": "https://git.kernel.org/stable/c/66da25277256b6bf4c3fdbf3c9bfd43324c9cf25"
},
{
"url": "https://git.kernel.org/stable/c/d96e83d028d7d8762e424e49c671d49ac2ecf14f"
}
],
"title": "scsi: ufs: core: Validate string descriptors",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-92480",
"datePublished": "2026-09-17T16:09:57.719Z",
"dateReserved": "2026-09-16T12:21:13.870Z",
"dateUpdated": "2026-10-30T12:35:36.682Z",
"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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