CVE-2025-40015

Kernel crash via premature subdevice dereference

Published Oct 20, 2025 · Updated Oct 20, 2025

NULL pointer dereference in the STM32 CSI driver in Linux 6.15 allows attackers to crash the kernel when video capture starts. stm32_csi_start reads csidev->s_subdev to derive src_pad before checking whether the subdevice pointer is NULL. The fault requires the STM32 CSI driver and a capture-start path with an absent subdevice, and its bounded consequence is service interruption.

CVSS severityUnavailable
Unscored
EPSS probability0.22%
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 STM32 CSI driver in Linux 6.15 allows attackers to crash the kernel when video capture starts. stm32_csi_start reads csidev->s_subdev to derive src_pad before checking whether the subdevice pointer is NULL. The fault requires the STM32 CSI driver and a capture-start path with an absent subdevice, and its bounded consequence is service interruption.

The record

CVE
CVE-2025-40015
Published
Oct 20, 2025
Updated
Oct 20, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 20, 2025Record 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=6.15
  2. Affected versionversion=e7bad98c205d17c745de9d83ebf73e53cbf99d48 <1f053d82e59c785b2b939cbed12f13657f84b296
  3. Affected versionversion=e7bad98c205d17c745de9d83ebf73e53cbf99d48 <4eeafff163e80d576c5efc1360ae310c0ceedd02
  4. Affected versionversion=e7bad98c205d17c745de9d83ebf73e53cbf99d48 <80eaf32672871bd2623ce6ba13ffc1f018756580

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=6.15; version=e7bad98c205d17c745de9d83ebf73e53cbf99d48 <1f053d82e59c785b2b939cbed12f13657f84b296; version=e7bad98c205d17c745de9d83ebf73e53cbf99d48 <4eeafff163e80d576c5efc1360ae310c0ceedd02; version=e7bad98c205d17c745de9d83ebf73e53cbf99d48 <80eaf32672871bd2623ce6ba13ffc1f018756580

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

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 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

No sourced classifications are available.

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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