CVE-2023-52467

Local system crash via unchecked allocation failure

Published Feb 25, 2024 · Updated May 11, 2026

A NULL pointer dereference in affected Linux kernel releases starting with 5.9 allows local users to crash the system during syscon registration. of_syscon_register() fails to check the name returned by kasprintf() before the registration path dereferences it, so allocation failure supplies a NULL pointer. Exploitation requires local access and influence over a rare memory-allocation failure; Ubuntu states that attacker influence is very unlikely.

CVSS severity5.5
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A NULL pointer dereference in affected Linux kernel releases starting with 5.9 allows local users to crash the system during syscon registration. of_syscon_register() fails to check the name returned by kasprintf() before the registration path dereferences it, so allocation failure supplies a NULL pointer. Exploitation requires local access and influence over a rare memory-allocation failure; Ubuntu states that attacker influence is very unlikely.

The record

CVE
CVE-2023-52467
Published
Feb 25, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 25, 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=5.9
  2. Affected versionversion=e15d7f2b81d2e7d93115d46fa931b366c1cdebc2 <3ef1130deee98997275904d9bfc37af75e1e906c
  3. Affected versionversion=e15d7f2b81d2e7d93115d46fa931b366c1cdebc2 <41673c66b3d0c09915698fec5c13b24336f18dd1
  4. Affected versionversion=e15d7f2b81d2e7d93115d46fa931b366c1cdebc2 <527e8c5f3d00299822612c495d5adf1f8f43c001
  5. Affected versionversion=e15d7f2b81d2e7d93115d46fa931b366c1cdebc2 <7f2c410ac470959b88e03dadd94b7a0b71df7973
  6. Affected versionversion=e15d7f2b81d2e7d93115d46fa931b366c1cdebc2 <927626a2073887ee30ba00633260d4d203f8e875
  7. Affected versionversion=e15d7f2b81d2e7d93115d46fa931b366c1cdebc2 <c3e3a2144bf50877551138ffce9f7aa6ddfe385b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.9; version=e15d7f2b81d2e7d93115d46fa931b366c1cdebc2 <3ef1130deee98997275904d9bfc37af75e1e906c; version=e15d7f2b81d2e7d93115d46fa931b366c1cdebc2 <41673c66b3d0c09915698fec5c13b24336f18dd1; version=e15d7f2b81d2e7d93115d46fa931b366c1cdebc2 <527e8c5f3d00299822612c495d5adf1f8f43c001; version=e15d7f2b81d2e7d93115d46fa931b366c1cdebc2 <7f2c410ac470959b88e03dadd94b7a0b71df7973; version=e15d7f2b81d2e7d93115d46fa931b366c1cdebc2 <927626a2073887ee30ba00633260d4d203f8e875; version=e15d7f2b81d2e7d93115d46fa931b366c1cdebc2 <c3e3a2144bf50877551138ffce9f7aa6ddfe385b

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

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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