net: nexthop: Initialize all fields in dumped nexthops (Linux Linux)

CVE-2024-42283
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.24 % · centile 15 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: net: nexthop: Initialize all fields in dumped nexthops struct nexthop_grp contains two reserved fields that are not initialized by nla_put_nh_group(), and carry garbage. This can be observed e.g. with strace (edited for clarity): # ip nexthop add id 1 dev lo # ip nexthop add id 101 group 1 # strace -e recvmsg ip nexthop get id 101 ... recvmsg(... [{nla_len=12, nla_type=NHA_GROUP}, [{id=1, weight=0, resvd1=0x69, resvd2=0x67}]] ...) = 52 The fields are reserved and therefore not currently used. But as they are, they leak kernel memory, and the fact they are not just zero complicates repurposing of the fields for new ends. Initialize the full structure.

Faiblesses (CWE)

  • CWE-908 — Utilisation d'une ressource non initialisée

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 430a049190de3c9e219f43084de9f1122da04570 < fd06cb4a5fc7bda3dea31712618a62af72a1c6cb ; affected 430a049190de3c9e219f43084de9f1122da04570 < 5cc4d71dda2dd4f1520f40e634a527022e48ccd8 ; affected 430a049190de3c9e219f43084de9f1122da04570 < 9e8f558a3afe99ce51a642ce0d3637ddc2b5d5d0 ; affected 430a049190de3c9e219f43084de9f1122da04570 < 1377de719652d868f5317ba8398b7e74c5f0430b ; affected 430a049190de3c9e219f43084de9f1122da04570 < 7704460acd7f5d35eb07c52500987dc9b95313fb ; affected 430a049190de3c9e219f43084de9f1122da04570 < a13d3864b76ac87085ec530b2ff8e37482a63a96
Linux · Linuxaffected 5.3 ; unaffected 0 < 5.3 ; unaffected 5.4.282 ≤ 5.4.* ; unaffected 5.10.224 ≤ 5.10.* ; unaffected 5.15.165 ≤ 5.15.* ; unaffected 6.1.103 ≤ 6.1.*

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