CVE-2025-38679

Kernel-memory disclosure or crash via payload overread

Published Sep 4, 2025 · Updated Sep 4, 2025

Out-of-bounds read in the Linux kernel Venus driver allows local users to disclose kernel memory or crash the system via a crafted video stream. The event_seq_changed handler trusts the firmware-supplied property count and walks pkt_buf without checking the remaining message length before each property access. Access to the local Venus V4L2 decoder node is required; malformed events can expose kernel words or trigger an oops, panic, or lockup.

CVSS severity7.3
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in the Linux kernel Venus driver allows local users to disclose kernel memory or crash the system via a crafted video stream. The event_seq_changed handler trusts the firmware-supplied property count and walks pkt_buf without checking the remaining message length before each property access. Access to the local Venus V4L2 decoder node is required; malformed events can expose kernel words or trigger an oops, panic, or lockup.

The record

CVE
CVE-2025-38679
Published
Sep 4, 2025
Updated
Sep 4, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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=09c2845e8fe4fcab942929480203f504a6e0a114 <06d6770ff0d8cc8dfd392329a8cc03e2a83e7289
  2. Affected versionversion=09c2845e8fe4fcab942929480203f504a6e0a114 <6f08bfb5805637419902f3d70069fe17a404545b
  3. Affected versionversion=09c2845e8fe4fcab942929480203f504a6e0a114 <8f274e2b05fdae7a53cee83979202b5ecb49035c
  4. Affected versionversion=09c2845e8fe4fcab942929480203f504a6e0a114 <a3eef5847603cd8a4110587907988c3f93c9605a
  5. Affected versionversion=09c2845e8fe4fcab942929480203f504a6e0a114 <bed4921055dd7bb4d2eea2729852ae18cf97a2c6
  6. Affected versionversion=09c2845e8fe4fcab942929480203f504a6e0a114 <c956c3758510b448b3d4d10d1da8230e8c9bf668
  7. Affected versionversion=4.13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=09c2845e8fe4fcab942929480203f504a6e0a114 <06d6770ff0d8cc8dfd392329a8cc03e2a83e7289; version=09c2845e8fe4fcab942929480203f504a6e0a114 <6f08bfb5805637419902f3d70069fe17a404545b; version=09c2845e8fe4fcab942929480203f504a6e0a114 <8f274e2b05fdae7a53cee83979202b5ecb49035c; version=09c2845e8fe4fcab942929480203f504a6e0a114 <a3eef5847603cd8a4110587907988c3f93c9605a; version=09c2845e8fe4fcab942929480203f504a6e0a114 <bed4921055dd7bb4d2eea2729852ae18cf97a2c6; version=09c2845e8fe4fcab942929480203f504a6e0a114 <c956c3758510b448b3d4d10d1da8230e8c9bf668; version=4.13

Published CVSS scores

7.1NISTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
7.3LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499.004Application or System Exploitation

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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