CVE-2023-53653

Local kernel crash via pre-check pointer dereference

Published Oct 7, 2025 · Updated Oct 7, 2025

NULL pointer dereference in the Amphion video encoder driver in affected Linux 5.18 through 6.5 branches allows local users to crash the kernel. The venc_g_parm and venc_s_parm handlers derive a timeperframe pointer from parm before verifying that parm is non-NULL. Exploitation requires local access to an exposed Amphion VPU encoder device; the documented consequence is a kernel crash with no data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.20%
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 Amphion video encoder driver in affected Linux 5.18 through 6.5 branches allows local users to crash the kernel. The venc_g_parm and venc_s_parm handlers derive a timeperframe pointer from parm before verifying that parm is non-NULL. Exploitation requires local access to an exposed Amphion VPU encoder device; the documented consequence is a kernel crash with no data disclosure or modification.

The record

CVE
CVE-2023-53653
Published
Oct 7, 2025
Updated
Oct 7, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 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=5.18
  2. Affected versionversion=9f599f351e86acf0fc13e42771f97b7fb4dbbea4 <79d3bafaecc13bccab1ebbd28a15e669c5a4cdaf
  3. Affected versionversion=9f599f351e86acf0fc13e42771f97b7fb4dbbea4 <bddd678fd2864b435d00d51a4d3808a0d89c79de
  4. Affected versionversion=9f599f351e86acf0fc13e42771f97b7fb4dbbea4 <e59d0cd8f414592187ead97b5832600ff7a0dd61
  5. Affected versionversion=9f599f351e86acf0fc13e42771f97b7fb4dbbea4 <ef56b2db216f130c4240aed907d1c5272c2d298d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.18; version=9f599f351e86acf0fc13e42771f97b7fb4dbbea4 <79d3bafaecc13bccab1ebbd28a15e669c5a4cdaf; version=9f599f351e86acf0fc13e42771f97b7fb4dbbea4 <bddd678fd2864b435d00d51a4d3808a0d89c79de; version=9f599f351e86acf0fc13e42771f97b7fb4dbbea4 <e59d0cd8f414592187ead97b5832600ff7a0dd61; version=9f599f351e86acf0fc13e42771f97b7fb4dbbea4 <ef56b2db216f130c4240aed907d1c5272c2d298d

Published CVSS scores

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.

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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-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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