CVE-2023-52774

Kernel panic via unlocked DASD queue traversal

Published May 21, 2024 · Updated May 11, 2026

Race condition in the Linux kernel s390 DASD driver 3.1 through 6.7-rc2 allows local users to trigger a kernel panic via parallel I/O. The dasd_profile_start() function walks and counts a mutable device request queue without holding its device lock, so concurrent queue changes cause invalid pointer accesses. Reaching the crash requires local low-privileged access and heavy parallel DASD I/O, with alias devices increasing exposure.

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

Race condition in the Linux kernel s390 DASD driver 3.1 through 6.7-rc2 allows local users to trigger a kernel panic via parallel I/O. The dasd_profile_start() function walks and counts a mutable device request queue without holding its device lock, so concurrent queue changes cause invalid pointer accesses. Reaching the crash requires local low-privileged access and heavy parallel DASD I/O, with alias devices increasing exposure.

The record

CVE
CVE-2023-52774
Published
May 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 21, 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=3.1
  2. Affected versionversion=4fa52aa7a82f9226b3874a69816bda3af821f002 <6062c527d0403cef27c54b91ac8390c3a497b250
  3. Affected versionversion=4fa52aa7a82f9226b3874a69816bda3af821f002 <9372aab5d0ff621ea203c8c603e7e5f75e888240
  4. Affected versionversion=4fa52aa7a82f9226b3874a69816bda3af821f002 <c841de6247e94e07566d57163d3c0d8b29278f7a
  5. Affected versionversion=4fa52aa7a82f9226b3874a69816bda3af821f002 <db46cd1e0426f52999d50fa72cfa97fa39952885
  6. Affected versionversion=4fa52aa7a82f9226b3874a69816bda3af821f002 <dc96fde8fcb2b896fd6c64802a7f4ece2e69b0be
  7. Affected versionversion=4fa52aa7a82f9226b3874a69816bda3af821f002 <ebdc569a07a3e8dbe66b4184922ad6f88ac0b96f
  8. Affected versionversion=4fa52aa7a82f9226b3874a69816bda3af821f002 <f1ac7789406e2ca9ac51c41ad2daa597f47bdd4d
  9. Affected versionversion=4fa52aa7a82f9226b3874a69816bda3af821f002 <f75617cc8df4155374132f0b500b0b3ebb967458

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.1; version=4fa52aa7a82f9226b3874a69816bda3af821f002 <6062c527d0403cef27c54b91ac8390c3a497b250; version=4fa52aa7a82f9226b3874a69816bda3af821f002 <9372aab5d0ff621ea203c8c603e7e5f75e888240; version=4fa52aa7a82f9226b3874a69816bda3af821f002 <c841de6247e94e07566d57163d3c0d8b29278f7a; version=4fa52aa7a82f9226b3874a69816bda3af821f002 <db46cd1e0426f52999d50fa72cfa97fa39952885; version=4fa52aa7a82f9226b3874a69816bda3af821f002 <dc96fde8fcb2b896fd6c64802a7f4ece2e69b0be; version=4fa52aa7a82f9226b3874a69816bda3af821f002 <ebdc569a07a3e8dbe66b4184922ad6f88ac0b96f; version=4fa52aa7a82f9226b3874a69816bda3af821f002 <f1ac7789406e2ca9ac51c41ad2daa597f47bdd4d; version=4fa52aa7a82f9226b3874a69816bda3af821f002 <f75617cc8df4155374132f0b500b0b3ebb967458

Published CVSS scores

5.5NISTCVSS: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
T1499Endpoint Denial of Service

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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