CVE-2022-49328

Adjacent code execution via unprotected station pointer

Published Feb 26, 2025 · Updated Aug 15, 2026

Use-after-free in the Linux mt76 Wi-Fi driver allows adjacent attackers to execute code in the kernel through wireless peer teardown. mt76_txq_schedule dereferences mtxq->wcid while station teardown can free the containing station object because the pointer lacks RCU protection. An attacker on the same wireless segment can race traffic against deauthentication or disassociation, causing kernel memory corruption or a kernel crash.

CVSS severity8.8
High
EPSS probability0.41%
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 mt76 Wi-Fi driver allows adjacent attackers to execute code in the kernel through wireless peer teardown. mt76_txq_schedule dereferences mtxq->wcid while station teardown can free the containing station object because the pointer lacks RCU protection. An attacker on the same wireless segment can race traffic against deauthentication or disassociation, causing kernel memory corruption or a kernel crash.

The record

CVE
CVE-2022-49328
Published
Feb 26, 2025
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.2
  2. Affected versionversion=90fdc1717b1862eb3d506733f3b3e5217bc0de20 <4448327b41738dbfcda680eb4935ff835568f468
  3. Affected versionversion=90fdc1717b1862eb3d506733f3b3e5217bc0de20 <51fb1278aa57ae0fc54adaa786e1965362bed4fb
  4. Affected versionversion=90fdc1717b1862eb3d506733f3b3e5217bc0de20 <d5f77f1dbb59feae81f88e44551e8e1d8a802d9a
  5. Affected versionversion=90fdc1717b1862eb3d506733f3b3e5217bc0de20 <e55bcdd0bf34a8b10d45ce80ebb3164c5292a17d

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.2; version=90fdc1717b1862eb3d506733f3b3e5217bc0de20 <4448327b41738dbfcda680eb4935ff835568f468; version=90fdc1717b1862eb3d506733f3b3e5217bc0de20 <51fb1278aa57ae0fc54adaa786e1965362bed4fb; version=90fdc1717b1862eb3d506733f3b3e5217bc0de20 <d5f77f1dbb59feae81f88e44551e8e1d8a802d9a; version=90fdc1717b1862eb3d506733f3b3e5217bc0de20 <e55bcdd0bf34a8b10d45ce80ebb3164c5292a17d

Published CVSS scores

8.8kernel.orgCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.

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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

CWE-416Use After Free

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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