CVE-2022-49343

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

26/02/2025

Last modified:

21/10/2025

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: avoid cycles in directory h-tree A maliciously corrupted filesystem can contain cycles in the h-tree stored inside a directory. That can easily lead to the kernel corrupting tree nodes that were already verified under its hands while doing a node split and consequently accessing unallocated memory. Fix the problem by verifying traversed block numbers are unique.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::		4.14.283 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.15 (including)	4.19.247 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.198 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.121 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.46 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	5.17.14 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.18 (including)	5.18.3 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2022-49343

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools