CVE-2023-52774

MEDIUM
Published May 21, 2024 Modified Sep 23, 2025 CWE-476

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.

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CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/6062c527d0403cef27c54b91ac8390c3a497b250 https://git.kernel.org/stable/c/9372aab5d0ff621ea203c8c603e7e5f75e888240 https://git.kernel.org/stable/c/c841de6247e94e07566d57163d3c0d8b29278f7a https://git.kernel.org/stable/c/db46cd1e0426f52999d50fa72cfa97fa39952885 https://git.kernel.org/stable/c/dc96fde8fcb2b896fd6c64802a7f4ece2e69b0be https://git.kernel.org/stable/c/ebdc569a07a3e8dbe66b4184922ad6f88ac0b96f https://git.kernel.org/stable/c/f1ac7789406e2ca9ac51c41ad2daa597f47bdd4d https://git.kernel.org/stable/c/f75617cc8df4155374132f0b500b0b3ebb967458 https://git.kernel.org/stable/c/6062c527d0403cef27c54b91ac8390c3a497b250 https://git.kernel.org/stable/c/9372aab5d0ff621ea203c8c603e7e5f75e888240 https://git.kernel.org/stable/c/c841de6247e94e07566d57163d3c0d8b29278f7a https://git.kernel.org/stable/c/db46cd1e0426f52999d50fa72cfa97fa39952885 https://git.kernel.org/stable/c/dc96fde8fcb2b896fd6c64802a7f4ece2e69b0be https://git.kernel.org/stable/c/ebdc569a07a3e8dbe66b4184922ad6f88ac0b96f https://git.kernel.org/stable/c/f1ac7789406e2ca9ac51c41ad2daa597f47bdd4d https://git.kernel.org/stable/c/f75617cc8df4155374132f0b500b0b3ebb967458

Frequently Asked Questions

What is CVE-2023-52774? +
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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2023-52774? +
CVE-2023-52774 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2023-52774? +
CVE-2023-52774 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2023-52774? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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