CVE-2024-26802

Kernel panic via stale stmmac workqueue pointer

Published Apr 4, 2024 · Updated Aug 5, 2026

NULL pointer dereference in the stmmac driver in Linux allows local users to crash the kernel after a failed hardware resume. The stmmac_fpe_stop_wq() function destroys its workqueue without clearing the stored pointer; a failed stmmac_hw_setup() then skips reinitialization before reset destroys the stale object again. Local access and an stmmac device that encounters DMA initialization failure are required; the second destroy causes a kernel panic and host outage.

CVSS severity7.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the stmmac driver in Linux allows local users to crash the kernel after a failed hardware resume. The stmmac_fpe_stop_wq() function destroys its workqueue without clearing the stored pointer; a failed stmmac_hw_setup() then skips reinitialization before reset destroys the stale object again. Local access and an stmmac device that encounters DMA initialization failure are required; the second destroy causes a kernel panic and host outage.

The record

CVE
CVE-2024-26802
Published
Apr 4, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 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=5.13
  2. Affected versionversion=5a5586112b929546e16029261a987c9197bfdfa2 <17ccd9798fe0beda3db212cfa3ebe373f605cbd6
  3. Affected versionversion=5a5586112b929546e16029261a987c9197bfdfa2 <699b103e48ce32d03fc86c35b37ee8ae4288c7e3
  4. Affected versionversion=5a5586112b929546e16029261a987c9197bfdfa2 <8af411bbba1f457c33734795f024d0ef26d0963f
  5. Affected versionversion=5a5586112b929546e16029261a987c9197bfdfa2 <8e99556301172465c8fe33c7f78c39a3d4ce8462
  6. Affected versionversion=5a5586112b929546e16029261a987c9197bfdfa2 <f72cf22dccc94038cbbaa1029cb575bf52e5cbc8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=5a5586112b929546e16029261a987c9197bfdfa2 <17ccd9798fe0beda3db212cfa3ebe373f605cbd6; version=5a5586112b929546e16029261a987c9197bfdfa2 <699b103e48ce32d03fc86c35b37ee8ae4288c7e3; version=5a5586112b929546e16029261a987c9197bfdfa2 <8af411bbba1f457c33734795f024d0ef26d0963f; version=5a5586112b929546e16029261a987c9197bfdfa2 <8e99556301172465c8fe33c7f78c39a3d4ce8462; version=5a5586112b929546e16029261a987c9197bfdfa2 <f72cf22dccc94038cbbaa1029cb575bf52e5cbc8

Published CVSS scores

7.8Linux kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5NIST NVDCVSS: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.

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-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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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