CVE-2026-46111

Kernel memory corruption via stale Bluetooth connection

Published May 28, 2026 · Updated May 28, 2026

Use-after-free in the Linux Kernel Bluetooth subsystem allows local users to corrupt kernel memory through asynchronous BIG creation. The create_big_sync path queues BIG creation without holding an hci_conn reference, and create_big_complete dereferences the freed connection after teardown. The path requires local low-privileged access and Bluetooth ISO/BIS support; the documented consequence is a stale-pointer dereference in kernel context.

CVSS severity7.8
High
EPSS probability0.13%
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 subsystem allows local users to corrupt kernel memory through asynchronous BIG creation. The create_big_sync path queues BIG creation without holding an hci_conn reference, and create_big_complete dereferences the freed connection after teardown. The path requires local low-privileged access and Bluetooth ISO/BIS support; the documented consequence is a stale-pointer dereference in kernel context.

The record

CVE
CVE-2026-46111
Published
May 28, 2026
Updated
May 28, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 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=eca0ae4aea66914515e5e3098ea051b518ee5316 <0beddb0c380bed5f5b8e61ddbe14635bb73d0b41
  3. Affected versionversion=eca0ae4aea66914515e5e3098ea051b518ee5316 <1750a2df0eab61dc421a7afae74abdd239a44b85
  4. Affected versionversion=eca0ae4aea66914515e5e3098ea051b518ee5316 <6823f730bf195fc296d9edd09e2ca94bc1ff5584
  5. Affected versionversion=eca0ae4aea66914515e5e3098ea051b518ee5316 <dc34f8d8240f25dd137dc2758ebbcc75e3779142
  6. Affected versionversion=eca0ae4aea66914515e5e3098ea051b518ee5316 <f8eaf92c57ad99358dd372580d5ff87623343a72

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.0; version=eca0ae4aea66914515e5e3098ea051b518ee5316 <0beddb0c380bed5f5b8e61ddbe14635bb73d0b41; version=eca0ae4aea66914515e5e3098ea051b518ee5316 <1750a2df0eab61dc421a7afae74abdd239a44b85; version=eca0ae4aea66914515e5e3098ea051b518ee5316 <6823f730bf195fc296d9edd09e2ca94bc1ff5584; version=eca0ae4aea66914515e5e3098ea051b518ee5316 <dc34f8d8240f25dd137dc2758ebbcc75e3779142; version=eca0ae4aea66914515e5e3098ea051b518ee5316 <f8eaf92c57ad99358dd372580d5ff87623343a72

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

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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