CVE-2023-52567

Local system crash via absent IRQ data

Published Mar 2, 2024 · Updated May 23, 2026

NULL pointer dereference in the Linux kernel 8250 serial driver allows local users to crash the system through an IRQ-polling serial port. When serial8250_handle_irq sees an interrupt while a leaf driver uses IRQ polling with irq set to 0, it dereferences absent IRQ data while issuing a wake event. The path requires local access to such a configured 8250 serial device; the resulting kernel Oops interrupts the host, with no reported data exposure or modification.

CVSS severity5.5
Medium
EPSS probability0.23%
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 kernel 8250 serial driver allows local users to crash the system through an IRQ-polling serial port. When serial8250_handle_irq sees an interrupt while a leaf driver uses IRQ polling with irq set to 0, it dereferences absent IRQ data while issuing a wake event. The path requires local access to such a configured 8250 serial device; the resulting kernel Oops interrupts the host, with no reported data exposure or modification.

The record

CVE
CVE-2023-52567
Published
Mar 2, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1489
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 2, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=0ba9e3a13c6adfa99e32b2576d20820ab10ad48a <3345cc5f02f1fb4c4dcb114706f2210d879ab933
  2. Affected versionversion=0ba9e3a13c6adfa99e32b2576d20820ab10ad48a <cce7fc8b29961b64fadb1ce398dc5ff32a79643b
  3. Affected versionversion=0bd49a043c7984c93c2a0af41222fb71c3986a4e <c334650150c29234b0923476f51573ae1b2f252a
  4. Affected versionversion=4.14.315 <4.14.327
  5. Affected versionversion=4.19.283 <4.19.296
  6. Affected versionversion=424cf29296354d7b9c6c038aaa7bb71782100851 <2b837f13a818f96304736453ac53b66a70aaa4f2
  7. Affected versionversion=5.10.180 <5.10.198
  8. Affected versionversion=5.15.111 <5.15.134
  9. Affected versionversion=5.4.243 <5.4.258
  10. Affected versionversion=572d48361aa0a6e6f16c1470e5407de183493d0c <bf3c728e3692cc6d998874f0f27d433117348742
  11. Affected versionversion=6.1.28 <6.1.56
  12. Affected versionversion=6.2.15 <6.3
  13. Affected versionversion=6.3.2 <6.4
  14. Affected versionversion=6.4
  15. Affected versionversion=727e92fe13e81c6088a88d83e466b2b1b553c4e3 <e14f68a48fd445a083ac0750fafcb064df5f18f7
  16. Affected versionversion=d5d628fea5f6181809a9d61b04de6ade53277684 <e14afa4450cb7e4cf93e993a765801203d41d014
  17. Affected versionversion=d7c6aa39eb041e2a6a53106104200d11e2acc87f
  18. Affected versionversion=edfe57aedff4ecf3606533aabf8ecf7676c3c5d9 <ee5732caaffba3a37e753fdb89b4958db9a61847
  19. Affected versionversion=f5fd2fd999b364801e9790c6f69f3fe3f40ed60f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0ba9e3a13c6adfa99e32b2576d20820ab10ad48a <3345cc5f02f1fb4c4dcb114706f2210d879ab933; version=0ba9e3a13c6adfa99e32b2576d20820ab10ad48a <cce7fc8b29961b64fadb1ce398dc5ff32a79643b; version=0bd49a043c7984c93c2a0af41222fb71c3986a4e <c334650150c29234b0923476f51573ae1b2f252a; version=4.14.315 <4.14.327; version=4.19.283 <4.19.296; version=424cf29296354d7b9c6c038aaa7bb71782100851 <2b837f13a818f96304736453ac53b66a70aaa4f2; version=5.10.180 <5.10.198; version=5.15.111 <5.15.134; version=5.4.243 <5.4.258; version=572d48361aa0a6e6f16c1470e5407de183493d0c <bf3c728e3692cc6d998874f0f27d433117348742; version=6.1.28 <6.1.56; version=6.2.15 <6.3; version=6.3.2 <6.4; version=6.4; version=727e92fe13e81c6088a88d83e466b2b1b553c4e3 <e14f68a48fd445a083ac0750fafcb064df5f18f7; version=d5d628fea5f6181809a9d61b04de6ade53277684 <e14afa4450cb7e4cf93e993a765801203d41d014; version=d7c6aa39eb041e2a6a53106104200d11e2acc87f; version=edfe57aedff4ecf3606533aabf8ecf7676c3c5d9 <ee5732caaffba3a37e753fdb89b4958db9a61847; version=f5fd2fd999b364801e9790c6f69f3fe3f40ed60f

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
T1489Service Stop

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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