What is CVE-2023-53269?

CVE-2023-53269 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2025-09-16.

How severe is CVE-2023-53269?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Linux

CVE-2023-53269

In the Linux kernel, the following vulnerability has been resolved: block: ublk: make sure that block size is set correctly block size is one very key setting for block layer, and bad block size could panic kernel easily. Make sure that block size is set correctly. Meantime if ublk_validate_params() fails, clear ub->params so that disk is prevented from being added.

EPSS: 0.001 (4.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux — versions 71f28f3136aff5890cd56de78abc673f8393cad9, 6.0, 0
Linux Linux_kernel — versions 6.3

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2023-53269?: CVE-2023-53269 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2025-09-16.
How severe is CVE-2023-53269?: Medium severity. CVSS v3 base score is 5.5 out of 10.