CVE-2023-1252CWE-416

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

High · published March 23, 2023

CVSS v3.1
7.8
EPSS
0%
Percentile
12.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00223 · 12.3th percentile
Weakness
CWE-416 · Use After Free
Published
2023-03-23T00:00Z
EPSS history
Timeline
  • 23 MAR 00:00Z
    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
    cvelistv5