🛡️ CVE-2023-52774 — kernel

🟡 CVSS 5.5 — Medium ✅ No Known Exploit NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

s390/dasd: protect device queue against concurrent access

In the Linux kernel, the following vulnerability has been resolved:

s390/dasd: protect device queue against concurrent access

In dasd_profile_start() the amount of requests on the device queue are

counted. The access to the device queue is unprotected against

concurrent access. With a lot of parallel I/O, especially with alias

devices enabled, the device queue can change while dasd_profile_start()

is accessing the queue. In the worst case this leads to a kernel panic

due to incorrect pointer accesses.

Fix this by taking the device lock before accessing the queue and

counting the requests. Additionally the check for a valid profile data

pointer can be done earlier to avoid unnecessary locking in a hot path.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

CVE-2023-52774 is recorded against 2 packages.

  • kernel (from 6.2.0 up to 6.6.4)
  • linux-kernel

Timeline and source

Published on 21 May 2024 and last revised on 15 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2023-52774 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Medium
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2024-05-21
Updated 2026-08-12
Modified 2026-07-15

Affected Packages

Software From version Fixed in
kernel 6.2.0 6.6.4
linux-kernel — —

References

Similar Threats

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