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.

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.002 (3.8th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 3.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-53269: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

  • Linux — versions 71f28f3136aff5890cd56de78abc673f8393cad9, 6.0, 0
  • Linux Kernel — versions 6.3

References

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.