CVE-2022-48718

Kernel crash via NULL bridge-state dereference

Published Jun 20, 2024 · Updated May 11, 2026

NULL pointer dereference in the mxsfb DRM driver in Linux allows local users to crash the kernel through atomic display state handling. In mxsfb_kms.c, the CRTC atomic-check path treats a NULL return from drm_atomic_get_new_bridge_state() as a valid state and dereferences its output-bus format. Reachability requires local access and an active mxsfb display pipeline; triggering the flaw interrupts the host through a kernel crash.

CVSS severity5.5
Medium
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

NULL pointer dereference in the mxsfb DRM driver in Linux allows local users to crash the kernel through atomic display state handling. In mxsfb_kms.c, the CRTC atomic-check path treats a NULL return from drm_atomic_get_new_bridge_state() as a valid state and dereferences its output-bus format. Reachability requires local access and an active mxsfb display pipeline; triggering the flaw interrupts the host through a kernel crash.

The record

CVE
CVE-2022-48718
Published
Jun 20, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 20, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=5.15
  2. Affected versionversion=b776b0f00f246d093c595bac4453c6e51541d5c5 <622c9a3a7868e1eeca39c55305ca3ebec4742b64
  3. Affected versionversion=b776b0f00f246d093c595bac4453c6e51541d5c5 <6f9267e01cca749137349d8ffb0d0ebbadf567f4
  4. Affected versionversion=b776b0f00f246d093c595bac4453c6e51541d5c5 <86a337bb803040e4401b87c974a7fb92efe3d0e1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=b776b0f00f246d093c595bac4453c6e51541d5c5 <622c9a3a7868e1eeca39c55305ca3ebec4742b64; version=b776b0f00f246d093c595bac4453c6e51541d5c5 <6f9267e01cca749137349d8ffb0d0ebbadf567f4; version=b776b0f00f246d093c595bac4453c6e51541d5c5 <86a337bb803040e4401b87c974a7fb92efe3d0e1

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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.

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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