CVE-2026-64408

Kernel memory corruption via unpinned BNEP connection

Published Jul 25, 2026 · Updated Jul 25, 2026

Use-after-free in the Linux Kernel Bluetooth BNEP subsystem allows attackers to corrupt kernel memory through connection setup races. bnep_add_connection reads an L2CAP connection without the channel lock and passes its HCI device to register_netdev while controller teardown can free that parent concurrently. Bluetooth radio adjacency and an enabled, auto-authorized PAN service are required; hitting the race enables kernel-memory disclosure or corruption and can cause an oops or panic.

CVSS severity8.8
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux Kernel Bluetooth BNEP subsystem allows attackers to corrupt kernel memory through connection setup races. bnep_add_connection reads an L2CAP connection without the channel lock and passes its HCI device to register_netdev while controller teardown can free that parent concurrently. Bluetooth radio adjacency and an enabled, auto-authorized PAN service are required; hitting the race enables kernel-memory disclosure or corruption and can cause an oops or panic.

The record

CVE
CVE-2026-64408
Published
Jul 25, 2026
Updated
Jul 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 25, 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=3.13
  2. Affected versionversion=65f53e9802dbfae0e5758a91793c3f5f8bece49b <390b5db3ff8745187f094c4e915663b7b1f98944
  3. Affected versionversion=65f53e9802dbfae0e5758a91793c3f5f8bece49b <46a88784c4c9b96954dd86f747ce93f65efa1302
  4. Affected versionversion=65f53e9802dbfae0e5758a91793c3f5f8bece49b <551ae773ec64045b4e72099132654887e0270bcc
  5. Affected versionversion=65f53e9802dbfae0e5758a91793c3f5f8bece49b <563a8573047182f550b1e1e030615755cd8c41da
  6. Affected versionversion=65f53e9802dbfae0e5758a91793c3f5f8bece49b <a6b22dbd80926556290ad2243be25218d6956a19
  7. Affected versionversion=65f53e9802dbfae0e5758a91793c3f5f8bece49b <ae215c5b6422d8eda443b861b124bd1be6969c31
  8. Affected versionversion=65f53e9802dbfae0e5758a91793c3f5f8bece49b <bb067a99a0356196c0b89a95721985485ebce5a5
  9. Affected versionversion=65f53e9802dbfae0e5758a91793c3f5f8bece49b <df22adc7eafc22e651561813c11dc51a796b12ee

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=3.13; version=65f53e9802dbfae0e5758a91793c3f5f8bece49b <390b5db3ff8745187f094c4e915663b7b1f98944; version=65f53e9802dbfae0e5758a91793c3f5f8bece49b <46a88784c4c9b96954dd86f747ce93f65efa1302; version=65f53e9802dbfae0e5758a91793c3f5f8bece49b <551ae773ec64045b4e72099132654887e0270bcc; version=65f53e9802dbfae0e5758a91793c3f5f8bece49b <563a8573047182f550b1e1e030615755cd8c41da; version=65f53e9802dbfae0e5758a91793c3f5f8bece49b <a6b22dbd80926556290ad2243be25218d6956a19; version=65f53e9802dbfae0e5758a91793c3f5f8bece49b <ae215c5b6422d8eda443b861b124bd1be6969c31; version=65f53e9802dbfae0e5758a91793c3f5f8bece49b <bb067a99a0356196c0b89a95721985485ebce5a5; version=65f53e9802dbfae0e5758a91793c3f5f8bece49b <df22adc7eafc22e651561813c11dc51a796b12ee

Published CVSS scores

8.8Linux Kernel CNACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/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

T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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