CVE-2026-46222

Local system crash via unconnected rkcif pad

Published May 28, 2026 · Updated May 28, 2026

NULL pointer dereference in the rkcif driver in Linux Kernel 6.19 allows local users to crash the system by starting a video stream. The rkcif media pads omit the MUST_CONNECT flag, so stream enablement accepts an unconnected pad and dereferences a null interface. Access to the Rockchip rkcif video device and permission to issue the stream-on ioctl are required; the reported consequence is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.10%
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 rkcif driver in Linux Kernel 6.19 allows local users to crash the system by starting a video stream. The rkcif media pads omit the MUST_CONNECT flag, so stream enablement accepts an unconnected pad and dereferences a null interface. Access to the Rockchip rkcif video device and permission to issue the stream-on ioctl are required; the reported consequence is a kernel crash.

The record

CVE
CVE-2026-46222
Published
May 28, 2026
Updated
May 28, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 2026Record 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=6.19
  2. Affected versionversion=85411d17bee99b0a99e983f37188f9cdacfded54 <318142640590342bfec7aa06d0bdcd0ddbf953d0
  3. Affected versionversion=85411d17bee99b0a99e983f37188f9cdacfded54 <8e3c751259dc2d1325838eff26f41032523c7b57

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.19; version=85411d17bee99b0a99e983f37188f9cdacfded54 <318142640590342bfec7aa06d0bdcd0ddbf953d0; version=85411d17bee99b0a99e983f37188f9cdacfded54 <8e3c751259dc2d1325838eff26f41032523c7b57

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
T1499.004Endpoint Denial of Service: Application 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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