CVE-2023-53269

block: ublk: make sure that block size is set correctly

Medium · published September 16, 2025

CVSS v3.1
5.5
EPSS
0%
Percentile
4.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00157 · 4.5th percentile
Published
2025-09-16T08:06Z
EPSS history
Timeline
  • 16 SEP 08:06Z
    block: ublk: make sure that block size is set correctly
    cvelistv5