CVE-2023-52619

System crash via unaligned pstore zone mapping

Published Mar 18, 2024 · Updated May 11, 2026

Denial of service in affected Linux kernel releases allows local users to crash the system by initializing pstore/ram with an odd CPU count. The pstore/ram initialization path divides reserved memory into per-CPU zones without forcing an even zone size, so odd-numbered zones receive unaligned virtual addresses that crash when accessed. The pstore RAM backend must be enabled and initialized with an odd maximum CPU count; the reported consequence is a local system crash without disclosed data access or modification.

CVSS severity5.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in affected Linux kernel releases allows local users to crash the system by initializing pstore/ram with an odd CPU count. The pstore/ram initialization path divides reserved memory into per-CPU zones without forcing an even zone size, so odd-numbered zones receive unaligned virtual addresses that crash when accessed. The pstore RAM backend must be enabled and initialized with an odd maximum CPU count; the reported consequence is a local system crash without disclosed data access or modification.

The record

CVE
CVE-2023-52619
Published
Mar 18, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 18, 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=4.10
  2. Affected versionversion=de83209249d64bad993f25d3ea4bba57683e2e2e <0593cfd321df9001142a9d2c58d4144917dff7ee
  3. Affected versionversion=de83209249d64bad993f25d3ea4bba57683e2e2e <2a37905d47bffec61e95d99f0c1cc5dc6377956c
  4. Affected versionversion=de83209249d64bad993f25d3ea4bba57683e2e2e <75b0f71b26b3ad833c5c0670109c0af6e021e86a
  5. Affected versionversion=de83209249d64bad993f25d3ea4bba57683e2e2e <8b69c30f4e8b69131d92096cb296dc1f217101e4
  6. Affected versionversion=de83209249d64bad993f25d3ea4bba57683e2e2e <a63e48cd835c34c38ef671d344cc029b1ea5bf10
  7. Affected versionversion=de83209249d64bad993f25d3ea4bba57683e2e2e <cd40e43f870cf21726b22487a95ed223790b3542
  8. Affected versionversion=de83209249d64bad993f25d3ea4bba57683e2e2e <d49270a04623ce3c0afddbf3e984cb245aa48e9c
  9. Affected versionversion=de83209249d64bad993f25d3ea4bba57683e2e2e <e9f6ac50890104fdf8194f2865680689239d30fb

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.10; version=de83209249d64bad993f25d3ea4bba57683e2e2e <0593cfd321df9001142a9d2c58d4144917dff7ee; version=de83209249d64bad993f25d3ea4bba57683e2e2e <2a37905d47bffec61e95d99f0c1cc5dc6377956c; version=de83209249d64bad993f25d3ea4bba57683e2e2e <75b0f71b26b3ad833c5c0670109c0af6e021e86a; version=de83209249d64bad993f25d3ea4bba57683e2e2e <8b69c30f4e8b69131d92096cb296dc1f217101e4; version=de83209249d64bad993f25d3ea4bba57683e2e2e <a63e48cd835c34c38ef671d344cc029b1ea5bf10; version=de83209249d64bad993f25d3ea4bba57683e2e2e <cd40e43f870cf21726b22487a95ed223790b3542; version=de83209249d64bad993f25d3ea4bba57683e2e2e <d49270a04623ce3c0afddbf3e984cb245aa48e9c; version=de83209249d64bad993f25d3ea4bba57683e2e2e <e9f6ac50890104fdf8194f2865680689239d30fb

Published CVSS scores

5.5UbuntuCVSS: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

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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

T1499.004Application 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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