CVE-2026-74329

Stale-pointer access via retained power-management notifier

Published Aug 15, 2026 · Updated Aug 15, 2026

Use-after-free in the Linux kernel watchdog core allows attackers to trigger stale-pointer access during suspend or resume. watchdog_unregister_device() leaves wdd->pm_nb on the power-management notifier chain after clearing watchdog data, so watchdog_pm_notifier() later dereferences stale state. Reachability requires a WDOG_NO_PING_ON_SUSPEND watchdog to be unregistered before a later power event; the CNA does not specify the resulting impact.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
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 kernel watchdog core allows attackers to trigger stale-pointer access during suspend or resume. watchdog_unregister_device() leaves wdd->pm_nb on the power-management notifier chain after clearing watchdog data, so watchdog_pm_notifier() later dereferences stale state. Reachability requires a WDOG_NO_PING_ON_SUSPEND watchdog to be unregistered before a later power event; the CNA does not specify the resulting impact.

The record

CVE
CVE-2026-74329
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 15, 2026CVE 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

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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=5.15
  2. Affected versionversion=60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 <298821692d447c2f7b1bc9ef41cd88a31bf56436
  3. Affected versionversion=60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 <5d9b58ec6f5de5e159a570d419b1b08b3b9f854b
  4. Affected versionversion=60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 <89184909634e50d086d86d8a0c03fc86fe8d889f
  5. Affected versionversion=60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 <a298c7302ee9584a7a1ac1e8acbede8d98ab51a4
  6. Affected versionversion=60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 <c70b5bb6f04f77ef90e047d7edc2f476e206909f
  7. Affected versionversion=60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 <cd2d1b1f99308f7680d75a377daaff363f1cc736
  8. Affected versionversion=60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 <e690afea5c876a4abfa2978c6a664460ed7d1217

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 <298821692d447c2f7b1bc9ef41cd88a31bf56436; version=60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 <5d9b58ec6f5de5e159a570d419b1b08b3b9f854b; version=60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 <89184909634e50d086d86d8a0c03fc86fe8d889f; version=60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 <a298c7302ee9584a7a1ac1e8acbede8d98ab51a4; version=60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 <c70b5bb6f04f77ef90e047d7edc2f476e206909f; version=60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 <cd2d1b1f99308f7680d75a377daaff363f1cc736; version=60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 <e690afea5c876a4abfa2978c6a664460ed7d1217

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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)
VectorUnavailable
PrivilegesUnavailable
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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