CVE-2023-3111: A use after free vulnerability was found in prepare_to_relocate in fs/btrfs/relocation.c in btrfs in the Linux Kernel

High severity · published Jun 5, 2023

CVE-2023-3111

A use after free vulnerability was found in prepare_to_relocate in fs/btrfs/relocation.c in btrfs in the Linux Kernel

7.8

CVSS

0.4%

EPSS

On KEV

Description

A use after free vulnerability was found in prepare_to_relocate in fs/btrfs/relocation.c in btrfs in the Linux Kernel. This possible flaw can be triggered by calling btrfs_ioctl_balance() before calling btrfs_ioctl_defrag().

CVSS vector

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

Attack vector

Local

Complexity

Low

Privileges

Low

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.4% · higher than 38% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Kernel · Linux

2.6.31 before 4.14.318; 4.15 before 4.19.286; 4.20 before 5.4.247; 5.5 before 5.10.184; 5.11 before 5.15.63; 5.16 before 5.19.4 · source: NVD

Debian Linux · Debian

10.0; 11.0 · source: NVD

H300s Firmware · Netapp