CVE-2025-21826

MEDIUM EPSS 7.3%
Published Mar 6, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Mar 6, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
7.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel*≥5.10.209  –  <5.10.235
linuxlinux_kernel*≥5.15.148  –  <5.15.179
linuxlinux_kernel*≥6.1.75  –  <6.1.129
linuxlinux_kernel*≥6.6.14  –  <6.6.76
linuxlinux_kernel*≥6.7.2  –  <6.12.13
linuxlinux_kernel*≥6.13  –  <6.13.2

References 11

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-265688.html
  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-503939.html
  • git.kernel.org https://git.kernel.org/stable/c/1b9335a8000fb70742f7db10af314104b6ace220
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2ac254343d3cf228ae0738b2615fedf85d000752
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/49b7182b97bafbd5645414aff054b4a65d05823d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5083a7ae45003456c253e981b30a43f71230b4a3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b467c8feac759f4c5c86d708beca2aa2b29584f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/82e491e085719068179ff6a5466b7387cc4bbf32
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ab50d0eff4a939d20c37721fd9766347efcdb6f6
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1b9335a8000fb70742f7db10af314104b6ace220
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2ac254343d3cf228ae0738b2615fedf85d000752
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/49b7182b97bafbd5645414aff054b4a65d05823d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5083a7ae45003456c253e981b30a43f71230b4a3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b467c8feac759f4c5c86d708beca2aa2b29584f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/82e491e085719068179ff6a5466b7387cc4bbf32
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ab50d0eff4a939d20c37721fd9766347efcdb6f6
    Patch