CVE-2025-23156

Kernel disclosure and crash via payload over-read

Published May 1, 2025 · Updated Aug 5, 2026

Out-of-bounds read in the Linux kernel Venus HFI parser allows local users to disclose kernel memory through malformed video input. When words_count reaches the final payload word, property parsers advance data beyond the remaining buffer instead of tracking bytes consumed. Access to a Qualcomm Venus video device is required; the over-read can expose adjacent kernel memory and cause a kernel oops or video-pipeline hang.

CVSS severity7.1
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

Out-of-bounds read in the Linux kernel Venus HFI parser allows local users to disclose kernel memory through malformed video input. When words_count reaches the final payload word, property parsers advance data beyond the remaining buffer instead of tracking bytes consumed. Access to a Qualcomm Venus video device is required; the over-read can expose adjacent kernel memory and cause a kernel oops or video-pipeline hang.

The record

CVE
CVE-2025-23156
Published
May 1, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, T1068
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. May 1, 2025CVE 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1a73374a04e555103e5369429a30999114001dda <05b07e52a0d08239147ba3460045855f4fb398de
  2. Affected versionversion=1a73374a04e555103e5369429a30999114001dda <0beabe9b49190a02321b02792b29fc0f0e28b51f
  3. Affected versionversion=1a73374a04e555103e5369429a30999114001dda <0f9a4bab7d83738963365372e4745854938eab2d
  4. Affected versionversion=1a73374a04e555103e5369429a30999114001dda <6d278c5548d840c4d85d445347b2a5c31b2ab3a0
  5. Affected versionversion=1a73374a04e555103e5369429a30999114001dda <9edaaa8e3e15aab1ca413ab50556de1975bcb329
  6. Affected versionversion=1a73374a04e555103e5369429a30999114001dda <a736c72d476d1c7ca7be5018f2614ee61168ad01
  7. Affected versionversion=1a73374a04e555103e5369429a30999114001dda <bb3fd8b7906a12dc2b61389abb742bf6542d97fb
  8. Affected versionversion=1a73374a04e555103e5369429a30999114001dda <f195e94c7af921d99abd79f57026a218d191d2c7
  9. Affected versionversion=4.19

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=1a73374a04e555103e5369429a30999114001dda <05b07e52a0d08239147ba3460045855f4fb398de; version=1a73374a04e555103e5369429a30999114001dda <0beabe9b49190a02321b02792b29fc0f0e28b51f; version=1a73374a04e555103e5369429a30999114001dda <0f9a4bab7d83738963365372e4745854938eab2d; version=1a73374a04e555103e5369429a30999114001dda <6d278c5548d840c4d85d445347b2a5c31b2ab3a0; version=1a73374a04e555103e5369429a30999114001dda <9edaaa8e3e15aab1ca413ab50556de1975bcb329; version=1a73374a04e555103e5369429a30999114001dda <a736c72d476d1c7ca7be5018f2614ee61168ad01; version=1a73374a04e555103e5369429a30999114001dda <bb3fd8b7906a12dc2b61389abb742bf6542d97fb; version=1a73374a04e555103e5369429a30999114001dda <f195e94c7af921d99abd79f57026a218d191d2c7; version=4.19

Published CVSS scores

7.1NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
7.8Linux kernel CVE teamCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1068Exploitation for Privilege Escalation

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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