CVE-2024-44997

Kernel panic via stale WED callback pointer

Published Sep 4, 2024 · Updated Aug 5, 2026

Use-after-free in the MediaTek WED Ethernet driver in affected Linux kernels allows local users to trigger a kernel panic. A stale cb_priv pointer remains available after mtk_wed_setup_tc_block() frees it, and the callback dereferences it without a null check. Triggering the crash requires an MT798X device with WED enabled, multiple access-point interfaces on one band, and an interface-down operation; the demonstrated consequence is a kernel panic.

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

Use-after-free in the MediaTek WED Ethernet driver in affected Linux kernels allows local users to trigger a kernel panic. A stale cb_priv pointer remains available after mtk_wed_setup_tc_block() frees it, and the callback dereferences it without a null check. Triggering the crash requires an MT798X device with WED enabled, multiple access-point interfaces on one band, and an interface-down operation; the demonstrated consequence is a kernel panic.

The record

CVE
CVE-2024-44997
Published
Sep 4, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1529
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 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=6.2
  2. Affected versionversion=799684448e3e1f57257a6155541e53510488f67b <326a89321f9d5fe399fe6f9ff7c0fc766582a6a0
  3. Affected versionversion=799684448e3e1f57257a6155541e53510488f67b <b453a4bbda03aa8741279c360ac82d1c3ac33548
  4. Affected versionversion=799684448e3e1f57257a6155541e53510488f67b <db1b4bedb9b97c6d34b03d03815147c04fffe8b4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.2; version=799684448e3e1f57257a6155541e53510488f67b <326a89321f9d5fe399fe6f9ff7c0fc766582a6a0; version=799684448e3e1f57257a6155541e53510488f67b <b453a4bbda03aa8741279c360ac82d1c3ac33548; version=799684448e3e1f57257a6155541e53510488f67b <db1b4bedb9b97c6d34b03d03815147c04fffe8b4

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
T1529System Shutdown/Reboot

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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