CVE-2023-1252

7.8 highEPSS 0.2%

High (7.8) in linux linux kernel. EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.8 high

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 13% of CVEs (scores of 2026-10-31)
CWE: CWE-416
Published: 2023-03-23
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

linux:linux_kernel

References

https://lore.kernel.org/lkml/20211115165433.449951285%40linuxfoundation.org/
https://security.netapp.com/advisory/ntap-20230505-0005/
https://lore.kernel.org/lkml/20211115165433.449951285%40linuxfoundation.org/
https://security.netapp.com/advisory/ntap-20230505-0005/

Check your stack JSON