CVE-2022-50024

Service interruption via NULL LLI pointer dereference

Published Jun 18, 2025 · Updated May 11, 2026

NULL pointer dereference in the Linux DesignWare AXI DMA driver allows local users to trigger a kernel OOPS through an error path. The axi_chan_dump_lli() diagnostic reads fields from an LLI pointer without first rejecting a NULL value. Exploitation requires low-privileged local access and reaching the driver's error-handling path; the bounded consequence is service interruption from the OOPS.

CVSS severity5.5
Medium
EPSS probability0.17%
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 DesignWare AXI DMA driver allows local users to trigger a kernel OOPS through an error path. The axi_chan_dump_lli() diagnostic reads fields from an LLI pointer without first rejecting a NULL value. Exploitation requires low-privileged local access and reaching the driver's error-handling path; the bounded consequence is service interruption from the OOPS.

The record

CVE
CVE-2022-50024
Published
Jun 18, 2025
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 18, 2025CVE 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=5.12
  2. Affected versionversion=ef6fb2d6f1abd56cc067c694253ea362159b5ac3 <86cb0defe0e275453bc39e856bb523eb425a6537
  3. Affected versionversion=ef6fb2d6f1abd56cc067c694253ea362159b5ac3 <ad764df73ae5eada265fffc0408404703cbb2b8d
  4. Affected versionversion=ef6fb2d6f1abd56cc067c694253ea362159b5ac3 <af76e6fdcf92f1a742b788d0dba5edd194267bf9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.12; version=ef6fb2d6f1abd56cc067c694253ea362159b5ac3 <86cb0defe0e275453bc39e856bb523eb425a6537; version=ef6fb2d6f1abd56cc067c694253ea362159b5ac3 <ad764df73ae5eada265fffc0408404703cbb2b8d; version=ef6fb2d6f1abd56cc067c694253ea362159b5ac3 <af76e6fdcf92f1a742b788d0dba5edd194267bf9

Published CVSS scores

5.5Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.

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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