CVE-2026-68154

libceph: reject zero bucket types in crush_decode

CRITICAL 9.8

En bref

Source
NVD
EPSS
EPSS 0.71 % · centile 54 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Received

Description

In the Linux kernel, the following vulnerability has been resolved: libceph: reject zero bucket types in crush_decode CRUSH bucket type 0 is reserved for devices. The mapper relies on that invariant and uses type 0 to identify leaf devices. If crush_decode() accepts a bucket with type 0, a malformed CRUSH map can make the mapper treat a negative bucket ID as a device and pass it to is_out(), which then indexes the OSD weight array with a negative value. Reject zero bucket types while decoding the CRUSH map so the invalid state never reaches the mapper.

Faiblesses (CWE)

  • CWE-20 — Validation d'entrée incorrecte

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1CRITICAL 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1CRITICAL 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Produits affectés

ProduitVersions
Linux · Linuxaffected f24e9980eb860d8600cbe5ef3d2fd9295320d229 < 952ca5dc99913d169263f59fd689f586729a13c1 ; affected f24e9980eb860d8600cbe5ef3d2fd9295320d229 < 146461f09565afe3665e65b0423d3d6b0fe806c5 ; affected f24e9980eb860d8600cbe5ef3d2fd9295320d229 < 80fc40e11cda1b5d990a3f69c6efa344fb5cd987 ; affected f24e9980eb860d8600cbe5ef3d2fd9295320d229 < b8a9fb6bf806f9c4891e71ae1beab0c07c23a877 ; affected f24e9980eb860d8600cbe5ef3d2fd9295320d229 < 826cd1de5802fd392922785f9b64d76e65d2a100 ; affected f24e9980eb860d8600cbe5ef3d2fd9295320d229 < 3b2f1937f5fce8b7dd5432e7693e3cc8b5eece56
Linux · Linuxaffected 2.6.34 ; unaffected 0 < 2.6.34 ; unaffected 5.10.265 ≤ 5.10.* ; unaffected 5.15.216 ≤ 5.15.* ; unaffected 6.1.183 ≤ 6.1.* ; unaffected 6.6.148 ≤ 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