CVE-2026-72334

Kernel panic via oversized Bluetooth ISO fragments

Published Aug 15, 2026 · Updated Aug 15, 2026

Out-of-bounds write in Linux 6.0 through 7.1.4 Bluetooth ISO reassembly allows remote attackers to trigger a kernel panic. The iso_recv path passes an oversized ISO_END fragment to skb_put without first checking it against the remaining receive length; malformed continuation sequences can also retain conn->rx_skb. Exploitation requires adjacent Bluetooth ISO traffic, and the disclosed consequences are a host crash or kernel resource leak rather than code execution.

CVSS severity8.8
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Linux 6.0 through 7.1.4 Bluetooth ISO reassembly allows remote attackers to trigger a kernel panic. The iso_recv path passes an oversized ISO_END fragment to skb_put without first checking it against the remaining receive length; malformed continuation sequences can also retain conn->rx_skb. Exploitation requires adjacent Bluetooth ISO traffic, and the disclosed consequences are a host crash or kernel resource leak rather than code execution.

The record

CVE
CVE-2026-72334
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.0
  2. Affected versionversion=ccf74f2390d60a2f9a75ef496d2564abb478f46a <990e65eb9387c4ddfa7f68782b6644c2c35d489f
  3. Affected versionversion=ccf74f2390d60a2f9a75ef496d2564abb478f46a <e054c1a6ae7310d2815778fddb87da616e11c255

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.0; version=ccf74f2390d60a2f9a75ef496d2564abb478f46a <990e65eb9387c4ddfa7f68782b6644c2c35d489f; version=ccf74f2390d60a2f9a75ef496d2564abb478f46a <e054c1a6ae7310d2815778fddb87da616e11c255

Published CVSS scores

8.8CVE.orgCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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