CVE-2023-1252

Name: CVE-2023-1252
Creator: NVD / NIST
Published: 2023-03-23T21:15:19.287+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2023-1252 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A use-after-free flaw was found in the Linux kernel’s Ext4 File System in how a user triggers several file operations simultaneously with the overlay FS usage. This flaw allows a local user to crash or potentially escalate their privileges on the system. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

A use-after-free flaw was found in the Linux kernel’s Ext4 File System in how a user triggers several file operations simultaneously with the overlay FS usage. This flaw allows a local user to crash or potentially escalate their privileges on the system. Only if patch 9a2544037600 ("ovl: fix use after free in struct ovl_aio_req") not applied yet, the kernel could be affected.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.22%

12.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 5.6, < 5.10.80
Linux	Linux Kernel	>= 5.11, < 5.14.19
Linux	Linux Kernel	>= 5.15, < 5.15.3

References

Timeline

Published: Mar 23, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-1252?

How severe is CVE-2023-1252?

CVE-2023-1252 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2023-1252?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-1252?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST