CVE-2022-49230

Local service interruption via leaked station-update buffers

Published Feb 26, 2025 · Updated May 11, 2026

A memory leak in Linux kernel 5.16 through 5.17.1 allows local users to exhaust kernel memory through failed MT7915 station updates. mt7915_mcu_add_sta allocates a socket buffer but returns from failed mt7915_mcu_add_group or mt76_connac_mcu_sta_update calls without freeing it. Reachability requires an MT7915 wireless device and a failure during station setup; repeated failures consume kernel memory and can interrupt the system.

CVSS severity5.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A memory leak in Linux kernel 5.16 through 5.17.1 allows local users to exhaust kernel memory through failed MT7915 station updates. mt7915_mcu_add_sta allocates a socket buffer but returns from failed mt7915_mcu_add_group or mt76_connac_mcu_sta_update calls without freeing it. Reachability requires an MT7915 wireless device and a failure during station setup; repeated failures consume kernel memory and can interrupt the system.

The record

CVE
CVE-2022-49230
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 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=5.16
  2. Affected versionversion=89bbd3730f382f15cfcc2c9264c65b5901ce02fa <a43736cd12d82913102eb49cb56787a5553e028f
  3. Affected versionversion=89bbd3730f382f15cfcc2c9264c65b5901ce02fa <b334a245ff1d76b1e97af8cea648ea6798b9eb87
  4. Affected versionversion=89bbd3730f382f15cfcc2c9264c65b5901ce02fa <daf02c7e3c3dc82ffa925999597bd455cf799551

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.16; version=89bbd3730f382f15cfcc2c9264c65b5901ce02fa <a43736cd12d82913102eb49cb56787a5553e028f; version=89bbd3730f382f15cfcc2c9264c65b5901ce02fa <b334a245ff1d76b1e97af8cea648ea6798b9eb87; version=89bbd3730f382f15cfcc2c9264c65b5901ce02fa <daf02c7e3c3dc82ffa925999597bd455cf799551

Published CVSS scores

5.5CISA-ADPCVSS: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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499.004Application or System Exploitation

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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