FKIE_CVE-2026-72334
Vulnerability from fkie_nvd - Published: 2026-08-15 06:22 - Updated: 2026-10-16 19:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: ISO: fix malformed ISO_END/CONT handling
Core specification (Part C vol 4 sec 5.4.5) does not exclude empty
ISO_CONT, ISO_END packets. We currently reject them if they are last.
If controller sends malformed sequence
ISO_START -> rx_len = 4, ISO_CONT skb->len 4, ISO_START
that ends payload in ISO_CONT, we leak conn->rx_skb. If controller sends
too long ISO_END, we panic on skb_put. If controller sends too short
ISO_END we accept it.
Fix by marking unfinished ISO_START via conn->rx_skb != NULL. Check
skb->len properly before skb_put. Combine the ISO_CONT/END code paths
as they require the same initial checks. Reject too short ISO_END
packets.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/bluetooth/iso.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "d2df29dc9abda2fc10ff522eac0969f5b77b3637",
"status": "affected",
"version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
"versionType": "git"
},
{
"lessThan": "7250b6b5ba9b737cff2c2c1d0760360c7b6bca00",
"status": "affected",
"version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
"versionType": "git"
},
{
"lessThan": "49aeb54e3c912ef785311264a51ab9f3698e421b",
"status": "affected",
"version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
"versionType": "git"
},
{
"lessThan": "5e53e285f8c989662e34d4938c728a94226bff34",
"status": "affected",
"version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
"versionType": "git"
},
{
"lessThan": "990e65eb9387c4ddfa7f68782b6644c2c35d489f",
"status": "affected",
"version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
"versionType": "git"
},
{
"lessThan": "e054c1a6ae7310d2815778fddb87da616e11c255",
"status": "affected",
"version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/bluetooth/iso.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
"lessThan": "6.0",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: fix malformed ISO_END/CONT handling\n\nCore specification (Part C vol 4 sec 5.4.5) does not exclude empty\nISO_CONT, ISO_END packets. We currently reject them if they are last.\n\nIf controller sends malformed sequence\n\n ISO_START -\u003e rx_len = 4, ISO_CONT skb-\u003elen 4, ISO_START\n\nthat ends payload in ISO_CONT, we leak conn-\u003erx_skb. If controller sends\ntoo long ISO_END, we panic on skb_put. If controller sends too short\nISO_END we accept it.\n\nFix by marking unfinished ISO_START via conn-\u003erx_skb != NULL. Check\nskb-\u003elen properly before skb_put. Combine the ISO_CONT/END code paths\nas they require the same initial checks. Reject too short ISO_END\npackets."
}
],
"id": "CVE-2026-72334",
"lastModified": "2026-10-16T19:17:23.480",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-72334",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-16T18:47:11.084892Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-08-15T06:22:06.580",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/49aeb54e3c912ef785311264a51ab9f3698e421b"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/5e53e285f8c989662e34d4938c728a94226bff34"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/7250b6b5ba9b737cff2c2c1d0760360c7b6bca00"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/990e65eb9387c4ddfa7f68782b6644c2c35d489f"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/d2df29dc9abda2fc10ff522eac0969f5b77b3637"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/e054c1a6ae7310d2815778fddb87da616e11c255"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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