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CVE-2023-52774

5.5 · MEDIUM

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 ar…

Published May 21, 2024CWE-476EPSS 0.24%

Overview

CVE-2023-52774 is a medium-severity vulnerability. It was published on May 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/6062c527d0403cef27c54b91ac8390c3a497b250Refgit.kernel.org/stable/c/9372aab5d0ff621ea203c8c603e7e5f75e888240Refgit.kernel.org/stable/c/c841de6247e94e07566d57163d3c0d8b29278f7aRefgit.kernel.org/stable/c/db46cd1e0426f52999d50fa72cfa97fa39952885Refgit.kernel.org/stable/c/dc96fde8fcb2b896fd6c64802a7f4ece2e69b0beRefgit.kernel.org/stable/c/ebdc569a07a3e8dbe66b4184922ad6f88ac0b96fRefgit.kernel.org/stable/c/f1ac7789406e2ca9ac51c41ad2daa597f47bdd4dRefgit.kernel.org/stable/c/f75617cc8df4155374132f0b500b0b3ebb967458Refgit.kernel.org/stable/c/6062c527d0403cef27c54b91ac8390c3a497b250Refgit.kernel.org/stable/c/9372aab5d0ff621ea203c8c603e7e5f75e888240

How CyberStrike helps

Frequently asked questions

What is CVE-2023-52774?

CVE-2023-52774 is a medium-severity vulnerability. It was published on May 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-52774?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-52774?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-52774?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-52774 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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