Double Free in net/packet/af_packet.c leading to priviledge escalation (Linux Kernel Kernel)

CVE-2021-22600
MEDIUM 6.6CISA KEV ↗Exploitée selon l'ENISA depuis le 2022-04-11

En bref

Source
NVD
EPSS
EPSS 6.59 % · centile 94 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Google
Statut NVD
Analyzed

Description

A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755

Faiblesses (CWE)

  • CWE-415 — Double libération

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 6.6CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:HGoogle
CVSS 3.1MEDIUM 6.6CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:HNVD · cve-coordination@google.com (Secondary)
CVSS 3.1HIGH 7.0CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)
CVSS 2.0HIGH 7.2AV:L/AC:L/Au:N/C:C/I:C/A:CNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux Kernel · Kernelaffected unspecified < 5.4.168 ; affected unspecified < 5.10.88 ; affected unspecified < 5.15.11 ; affected unspecified < 5.16-rc6

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
CISA Known Exploited VulnerabilitiesCC0 1.0
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