netfilter: nf_tables: reject mismatching sum of field_len with set key length

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-21826
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-03-06 16:15:54 UTC
Updated2026-05-12 13:16:37 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: NVD-CWE-noinfo

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 2d4c0798a1ef8db15b3277697ac2def4eda42312 6b467c8feac759f4c5c86d708beca2aa2b29584f git Not specified
CNA Linux Linux affected 77be8c495a3f841e88b46508cc20d3d7d3289da3 5083a7ae45003456c253e981b30a43f71230b4a3 git Not specified
CNA Linux Linux affected 9cb084df01e198119de477ac691d682fb01e80f3 2ac254343d3cf228ae0738b2615fedf85d000752 git Not specified
CNA Linux Linux affected dc45bb00e66a33de1abb29e3d587880e1d4d9a7e 82e491e085719068179ff6a5466b7387cc4bbf32 git Not specified
CNA Linux Linux affected 3ce67e3793f48c1b9635beb9bb71116ca1e51b58 49b7182b97bafbd5645414aff054b4a65d05823d git Not specified
CNA Linux Linux affected 3ce67e3793f48c1b9635beb9bb71116ca1e51b58 ab50d0eff4a939d20c37721fd9766347efcdb6f6 git Not specified
CNA Linux Linux affected 3ce67e3793f48c1b9635beb9bb71116ca1e51b58 1b9335a8000fb70742f7db10af314104b6ace220 git Not specified
CNA Linux Linux affected ff67e3e488090908dc015ba04d7407d8bd467f7e git Not specified
CNA Linux Linux affected 6.8 Not specified
CNA Linux Linux unaffected 6.8 semver Not specified
CNA Linux Linux unaffected 5.10.235 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.179 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.129 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.76 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.13 6.12.* semver Not specified
CNA Linux Linux unaffected 6.13.2 6.13.* semver Not specified
CNA Linux Linux unaffected 6.14 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - BIOS affected * custom Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified

References

ReferenceSourceLinkTags
lists.debian.org/debian-lts-announce/2025/05/msg00030.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
cert-portal.siemens.com/productcert/html/ssa-503939.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/5083a7ae45003456c253e981b30a43f71230b4a3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/ab50d0eff4a939d20c37721fd9766347efcdb6f6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/6b467c8feac759f4c5c86d708beca2aa2b29584f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/49b7182b97bafbd5645414aff054b4a65d05823d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/82e491e085719068179ff6a5466b7387cc4bbf32 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/1b9335a8000fb70742f7db10af314104b6ace220 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/03/msg00028.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/2ac254343d3cf228ae0738b2615fedf85d000752 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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