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Vulnerability record · CVE-2023-53508 · published 1 October 2025

CVE-2023-53508: Linux kernel vulnerability

Linux · Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: ublk: fail to start device if queue setup is interrupted In ublk_ctrl_start_dev(), if wait_for_completion_interruptible() is interrupted by signal, queues aren't setup successfully yet, so we have to fail UBLK_CMD_START_DEV, otherwise kernel oops can be triggered. Reported by German when working on qemu-storage-deamon which requires single thread ublk daemon.

7.8 CVSS 3.1 High EPSS 0.16% · top 95.3%
7.8CVSS 3.1 base score
0.16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

In the Linux kernel, the following vulnerability has been resolved: ublk: fail to start device if queue setup is interrupted In ublk_ctrl_start_dev(), if wait_for_completion_interruptible() is interrupted by signal, queues aren't setup successfully yet, so we have to fail UBLK_CMD_START_DEV, otherwise kernel oops can be triggered. Reported by German when working on qemu-storage-deamon which requires single thread ublk daemon.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/0d5916c439574b18a0734872daa0022b3d6105ad Patch
https://git.kernel.org/stable/c/53e7d08f6d6e214c40db1f51291bb2975c789dc2 Patch
https://git.kernel.org/stable/c/6ab3e7d424cd413d7a5e976c8a30b4ffa84a65dd Patch

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Source: NIST National Vulnerability Database (record CVE-2023-53508), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.