CVE-2026-43017 (GCVE-0-2026-43017)
Vulnerability from cvelistv5
Published
2026-05-01 14:15
Modified
2026-05-01 14:15
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: MGMT: validate mesh send advertising payload length
mesh_send() currently bounds MGMT_OP_MESH_SEND by total command
length, but it never verifies that the bytes supplied for the
flexible adv_data[] array actually match the embedded adv_data_len
field. MGMT_MESH_SEND_SIZE only covers the fixed header, so a
truncated command can still pass the existing 20..50 byte range
check and later drive the async mesh send path past the end of the
queued command buffer.
Keep rejecting zero-length and oversized advertising payloads, but
validate adv_data_len explicitly and require the command length to
exactly match the flexible array size before queueing the request.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 Version: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 Version: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 Version: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 Version: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 Version: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 |
||
{
"containers": {
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"programFiles": [
"net/bluetooth/mgmt.c"
],
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{
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"status": "unaffected",
"version": "6.6.134",
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{
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"status": "unaffected",
"version": "6.12.81",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.22",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.12",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: validate mesh send advertising payload length\n\nmesh_send() currently bounds MGMT_OP_MESH_SEND by total command\nlength, but it never verifies that the bytes supplied for the\nflexible adv_data[] array actually match the embedded adv_data_len\nfield. MGMT_MESH_SEND_SIZE only covers the fixed header, so a\ntruncated command can still pass the existing 20..50 byte range\ncheck and later drive the async mesh send path past the end of the\nqueued command buffer.\n\nKeep rejecting zero-length and oversized advertising payloads, but\nvalidate adv_data_len explicitly and require the command length to\nexactly match the flexible array size before queueing the request."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-01T14:15:21.561Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/24fa32369cf15d8fc918bdfe94097b12e6acada0"
},
{
"url": "https://git.kernel.org/stable/c/244b639e6a3a8e26241e201004a3a9f764476631"
},
{
"url": "https://git.kernel.org/stable/c/0b706fb2294aff3adfd54653bda1b5e356ad4566"
},
{
"url": "https://git.kernel.org/stable/c/edb5898cfa91afe7e8f83eda18d93034c953d632"
},
{
"url": "https://git.kernel.org/stable/c/562ed1954f0c1bff3422b7b752bd3dacf185edbf"
},
{
"url": "https://git.kernel.org/stable/c/bda93eec78cdbfe5cda00785cefebd443e56b88b"
}
],
"title": "Bluetooth: MGMT: validate mesh send advertising payload length",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-43017",
"datePublished": "2026-05-01T14:15:21.561Z",
"dateReserved": "2026-05-01T14:12:55.975Z",
"dateUpdated": "2026-05-01T14:15:21.561Z",
"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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