CVE-2022-3112

System crash via unchecked timestamp allocation

Published Dec 14, 2022 · Updated Apr 22, 2025

NULL pointer dereference in the Linux Kernel 5.16-rc6 allows local users to crash the system through the Meson video decoder. The amvdec_add_ts function fails to check whether kzalloc returned NULL before writing timestamp fields and linking the allocation into the session list. Exposure requires the Meson video-decoder driver and local low-privileged access; successful exploitation crashes the kernel rather than altering or disclosing data.

CVSS severity5.5
Medium
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 Linux Kernel 5.16-rc6 allows local users to crash the system through the Meson video decoder. The amvdec_add_ts function fails to check whether kzalloc returned NULL before writing timestamp fields and linking the allocation into the session list. Exposure requires the Meson video-decoder driver and local low-privileged access; successful exploitation crashes the kernel rather than altering or disclosing data.

The record

CVE
CVE-2022-3112
Published
Dec 14, 2022
Updated
Apr 22, 2025
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 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=Linux 5.16-rc6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=Linux 5.16-rc6

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS: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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