CVE-2023-53269: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: from 6.0, before 6.1.24 (fixed in 6.1.24); from 6.2, before 6.2.11 (fixed in 6.2.11); version 6.3 only

Published 2025-09-16. Last modified 2026-06-17.