bpf: Use correct permission flag for mixed signed bounds arithmetic (Linux Linux)

CVE-2021-46908
HIGH 7.1

En bref

Source
NVD
EPSS
EPSS 0.24 % · centile 16 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Use correct permission flag for mixed signed bounds arithmetic We forbid adding unknown scalars with mixed signed bounds due to the spectre v1 masking mitigation. Hence this also needs bypass_spec_v1 flag instead of allow_ptr_leaks.

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HLinux
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
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 2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366 < 4f3ff11204eac0ee23acf64deecb3bad7b0db0c6 ; affected 2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366 < 4ccdc6c6cae38b91c871293fb0ed8c6845a61b51 ; affected 2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366 < 9601148392520e2e134936e76788fc2a6371e7be
Linux · Linuxaffected 5.8 ; unaffected 0 < 5.8 ; unaffected 5.10.32 ≤ 5.10.* ; unaffected 5.11.16 ≤ 5.11.* ; unaffected 5.12 ≤ *

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