thunderbolt: Reject zero-length property entries in validator
In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Reject zero-length property entries in validator tb_property_entry_valid() accepts entries with length == 0 for DIRECTORY, DATA, and TEXT types. A zero-length TEXT entry passes validation but causes an underflow in the null-termination logic: property->value.text[property->length * 4 - 1] = '\0'; When property->length is 0 this writes to offset -1 relative to the allocation. Reject zero-length entries early in the validator since they have no valid representation in the XDomain property protocol.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.259, 5.15.210, 6.1.176, 6.12.94, 6.18.36, 6.6.143, 7.0.13
- CVEs
- CVE-2026-53150
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 6 Nov 2026, 03:14 UTC · Revision 1
Source evidence
thunderbolt: Reject zero-length property entries in validator
core-osv · Original sourcePublished 25 Jun 2026, 08:38 UTC
In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Reject zero-length property entries in validator tb_property_entry_valid() accepts entries with length == 0 for DIRECTORY, DATA, and TEXT types. A zero-length TEXT entry passes validation but causes an underflow in the null-termination logic: property->value.text[property->length * 4 - 1] = '\0'; When property->length is 0 this writes to offset -1 relative to the allocation. Reject zero-length entries early in the validator since they have no valid representation in the XDomain property protocol.
osv:CVE-2026-53150
Kernel
Fixed versions: 5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.94, 6.18.36, 7.0.13
Complete source record
{
"id": "049c8fe6bfba11c500342ba0640c82ce1a9234cc3b5db01d4e8aaed3b20cc65b",
"url": "https://osv.dev/vulnerability/CVE-2026-53150",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "thunderbolt: Reject zero-length property entries in validator",
"summary": "In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Reject zero-length property entries in validator tb_property_entry_valid() accepts entries with length == 0 for DIRECTORY, DATA, and TEXT types. A zero-length TEXT entry passes validation but causes an underflow in the null-termination logic: property->value.text[property->length * 4 - 1] = '\\0'; When property->length is 0 this writes to offset -1 relative to the allocation. Reject zero-length entries early in the validator since they have no valid representation in the XDomain property protocol.",
"evidence": "osv:CVE-2026-53150",
"products": [
{
"name": {
"value": "Kernel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.10.259",
"evidence": "/affected/1/ranges"
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{
"value": "5.15.210",
"evidence": "/affected/1/ranges"
},
{
"value": "6.1.176",
"evidence": "/affected/1/ranges"
},
{
"value": "6.6.143",
"evidence": "/affected/1/ranges"
},
{
"value": "6.12.94",
"evidence": "/affected/1/ranges"
},
{
"value": "6.18.36",
"evidence": "/affected/1/ranges"
},
{
"value": "7.0.13",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CVE-2026-53150",
"aliases": [
"CVE-2026-53150"
],
"affected": [
{
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
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{
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{
"fixed": "35d6c9252a152e756768a26dbf216b9dd9dd8e92"
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{
"fixed": "99d9dbad1463afb510d42c9714f846361d1b726d"
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{
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{
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{
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},
{
"fixed": "cff8eb65d1eafe7793e54b4d0cf6bf831644630b"
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}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53150.json"
}
},
{
"ranges": [
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"type": "ECOSYSTEM",
"events": [
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"introduced": "4.15.0"
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{
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"events": [
{
"introduced": "5.11.0"
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{
"type": "ECOSYSTEM",
"events": [
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{
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},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.2.0"
},
{
"fixed": "6.6.143"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.7.0"
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{
"fixed": "6.12.94"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.13.0"
},
{
"fixed": "6.18.36"
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]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.19.0"
},
{
"fixed": "7.0.13"
}
]
}
],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53150.json"
}
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],
"modified": "2026-10-28T02:30:46.792781210Z",
"provider": "osv",
"references": [
"https://cert-portal.siemens.com/productcert/html/ssa-784472.html",
"https://git.kernel.org/stable/c/2e0ddac549ebd713eb9f4a15b6496e3440a17d8b",
"https://git.kernel.org/stable/c/35d6c9252a152e756768a26dbf216b9dd9dd8e92",
"https://git.kernel.org/stable/c/3b6e68cb97f725385010264a873e14a3921b6b8a",
"https://git.kernel.org/stable/c/581c2053ab4dbe27e83c9e62deb4c73aa8dc0c3a",
"https://git.kernel.org/stable/c/5f56bc6bddffe8710ba0ba8844023b5a44ca90e4",
"https://git.kernel.org/stable/c/99d9dbad1463afb510d42c9714f846361d1b726d",
"https://git.kernel.org/stable/c/ca11e7da4fba4b394f69e16448f4463c44c84de6",
"https://git.kernel.org/stable/c/cff8eb65d1eafe7793e54b4d0cf6bf831644630b",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53150.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-53150",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53150.json"
}
},
"related_cves": [
{
"value": "CVE-2026-53150",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 514482,
"published_at": "2026-06-25T08:38:35.531+00:00"
}