CVE-2025-21826

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

06/03/2025

Last modified:

03/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: reject mismatching sum of field_len with set key length The field length description provides the length of each separated key field in the concatenation, each field gets rounded up to 32-bits to calculate the pipapo rule width from pipapo_init(). The set key length provides the total size of the key aligned to 32-bits. Register-based arithmetics still allows for combining mismatching set key length and field length description, eg. set key length 10 and field description [ 5, 4 ] leading to pipapo width of 12.

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::::::::	5.10.209 (including)	5.10.235 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.15.148 (including)	5.15.179 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.1.75 (including)	6.1.129 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.6.14 (including)	6.6.76 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7.2 (including)	6.12.13 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13 (including)	6.13.2 (excluding)

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

CVE-2025-21826

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools