CVE-2026-43059

Kernel panic and use-after-free via pending-command mishandling

Published May 5, 2026 · Updated May 5, 2026

Use-after-free in Linux Kernel Bluetooth MGMT command handlers allows local users to crash the kernel through local commands. mgmt_add_adv_patterns_monitor_complete performs a second list deletion after mgmt_pending_valid has unlinked the command, while set_mesh_complete can free unrelated pending mesh commands still being processed. The issue requires local low-privileged access and a Bluetooth MGMT completion path; reported outcomes are kernel panic or memory corruption.

CVSS severity7.8
High
EPSS probability0.12%
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 Linux Kernel Bluetooth MGMT command handlers allows local users to crash the kernel through local commands. mgmt_add_adv_patterns_monitor_complete performs a second list deletion after mgmt_pending_valid has unlinked the command, while set_mesh_complete can free unrelated pending mesh commands still being processed. The issue requires local low-privileged access and a Bluetooth MGMT completion path; reported outcomes are kernel panic or memory corruption.

The record

CVE
CVE-2026-43059
Published
May 5, 2026
Updated
May 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 5, 2026CVE publishedPublication date reported by the CVE source.
  2. May 5, 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=302a1f674c00dd5581ab8e493ef44767c5101aab <02023ff760cc104a5d86a82ef5b8dd89098ad78d
  2. Affected versionversion=302a1f674c00dd5581ab8e493ef44767c5101aab <17f89341cb4281d1da0e2fb0de5406ab7c4e25ef
  3. Affected versionversion=302a1f674c00dd5581ab8e493ef44767c5101aab <b5c5e96f3b0a5003c3ff98ebb33e59afec51dd77
  4. Affected versionversion=6.17
  5. Affected versionversion=87a1f16f07c6c43771754075e08f45b41d237421
  6. Affected versionversion=d71b98f253b079cbadc83266383f26fe7e9e103b <695b45b2262fcb5e71bed1175aad59c72f92aa78

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=302a1f674c00dd5581ab8e493ef44767c5101aab <02023ff760cc104a5d86a82ef5b8dd89098ad78d; version=302a1f674c00dd5581ab8e493ef44767c5101aab <17f89341cb4281d1da0e2fb0de5406ab7c4e25ef; version=302a1f674c00dd5581ab8e493ef44767c5101aab <b5c5e96f3b0a5003c3ff98ebb33e59afec51dd77; version=6.17; version=87a1f16f07c6c43771754075e08f45b41d237421; version=d71b98f253b079cbadc83266383f26fe7e9e103b <695b45b2262fcb5e71bed1175aad59c72f92aa78

Published CVSS scores

7.8NIST National Vulnerability DatabaseCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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

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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