CVE-2026-46101

netfilter: reject zero shift in nft_bitwise

MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.13 % · centile 2 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: reject zero shift in nft_bitwise Reject zero shift operands for nft_bitwise left and right shift expressions during initialization. The carry propagation logic computes the carry from the adjacent 32-bit word using BITS_PER_TYPE(u32) - shift. A zero shift operand turns this into a 32-bit shift, which is undefined behaviour. Reject zero shift operands in the control plane, alongside the existing check for values greater than or equal to 32, so malformed rules never reach the packet path.

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < 9baa08d6b6b096fad70049533f0d705d85fdc979 ; affected 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < 4fccea585631621c975883911a08d15b6671f7dc ; affected 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < 9ad26c272405f53834871cc2e46b9b5393a666c3 ; affected 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < bffef0acec9c3b837a785248a893137fb7f26c95 ; affected 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < ca24f1243ad1a4d12d6a23876bbbe3ed02099853 ; affected 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < 6f820139d16a4c9865a145d4a9cf9c92cc632c14
Linux · Linuxaffected 5.6 ; unaffected 0 < 5.6 ; unaffected 5.10.258 ≤ 5.10.* ; unaffected 5.15.209 ≤ 5.15.* ; unaffected 6.1.175 ≤ 6.1.* ; unaffected 6.6.140 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD