CVE-2022-49754

Kernel memory corruption via oversized Bluetooth mesh parameters

Published Mar 27, 2025 · Updated May 11, 2026

Buffer overflow in Linux kernel 6.1 through 6.1.8 allows local users to corrupt kernel memory via a Bluetooth mesh send request. The mgmt_mesh_add() path copies as many as 50 parameter bytes into the 48-byte mesh_tx->param array because mesh_send() rejects only larger inputs. The user must have local low-privileged access and reach the Bluetooth mesh management path; exploitation can compromise kernel confidentiality, integrity, and availability.

CVSS severity7.8
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Linux kernel 6.1 through 6.1.8 allows local users to corrupt kernel memory via a Bluetooth mesh send request. The mgmt_mesh_add() path copies as many as 50 parameter bytes into the 48-byte mesh_tx->param array because mesh_send() rejects only larger inputs. The user must have local low-privileged access and reach the Bluetooth mesh management path; exploitation can compromise kernel confidentiality, integrity, and availability.

The record

CVE
CVE-2022-49754
Published
Mar 27, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-120, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 27, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=6.1
  2. Affected versionversion=b338d91703fae6f6afd67f3f75caa3b8f36ddef3 <2185e0fdbb2137f22a9dd9fcbf6481400d56299b
  3. Affected versionversion=b338d91703fae6f6afd67f3f75caa3b8f36ddef3 <ed818fd8c531abf561b379995ee7cc4c68029464

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.1; version=b338d91703fae6f6afd67f3f75caa3b8f36ddef3 <2185e0fdbb2137f22a9dd9fcbf6481400d56299b; version=b338d91703fae6f6afd67f3f75caa3b8f36ddef3 <ed818fd8c531abf561b379995ee7cc4c68029464

Published CVSS scores

7.8CISA-ADPCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1068Exploitation for Privilege Escalation

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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