CVE-2024-42303

Kernel crash via unchecked MMIO regmap error

Published Aug 17, 2024 · Updated May 11, 2026

Invalid pointer dereference in the Linux kernel allows local users to crash the system when the i.MX PXP driver probe hits an error. pxp_probe() passes the error pointer returned by a failed devm_regmap_init_mmio() call into later regmap setup instead of checking it and returning the failure. Reachability requires local low-privileged access, the i.MX PXP hardware path, and an MMIO regmap initialization failure; the demonstrated consequence is 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

Invalid pointer dereference in the Linux kernel allows local users to crash the system when the i.MX PXP driver probe hits an error. pxp_probe() passes the error pointer returned by a failed devm_regmap_init_mmio() call into later regmap setup instead of checking it and returning the failure. Reachability requires local low-privileged access, the i.MX PXP hardware path, and an MMIO regmap initialization failure; the demonstrated consequence is a kernel crash.

The record

CVE
CVE-2024-42303
Published
Aug 17, 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. Aug 17, 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=4e5bd3fdbeb3100d1f120999130afb2a7d41d82a <358bc85269d6a359fea597ef9fbb429cd3626e08
  2. Affected versionversion=4e5bd3fdbeb3100d1f120999130afb2a7d41d82a <57e9ce68ae98551da9c161aaab12b41fe8601856
  3. Affected versionversion=4e5bd3fdbeb3100d1f120999130afb2a7d41d82a <5ab6ac4e9e165b0fe8a326308218337007224f05
  4. Affected versionversion=6.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4e5bd3fdbeb3100d1f120999130afb2a7d41d82a <358bc85269d6a359fea597ef9fbb429cd3626e08; version=4e5bd3fdbeb3100d1f120999130afb2a7d41d82a <57e9ce68ae98551da9c161aaab12b41fe8601856; version=4e5bd3fdbeb3100d1f120999130afb2a7d41d82a <5ab6ac4e9e165b0fe8a326308218337007224f05; version=6.3

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.

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Technologies

Your stack

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Your stack

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