drm/amd/display: Avoid HDCP over-read and corruption (Linux Linux)

CVE-2021-47348
CRITICAL 9.1

En bref

Source
NVD
EPSS
EPSS 0.99 % · centile 62 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid HDCP over-read and corruption Instead of reading the desired 5 bytes of the actual target field, the code was reading 8. This could result in a corrupted value if the trailing 3 bytes were non-zero, so instead use an appropriately sized and zero-initialized bounce buffer, and read only 5 bytes before casting to u64.

Faiblesses (CWE)

  • CWE-119 — Opération hors des limites d'un tampon mémoire

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1CRITICAL 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HCISA-ADP
CVSS 3.1CRITICAL 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 4c283fdac08abf3211533f70623c90a34f41d08d < c5b518f4b98dbb2bc31b6a55e6aaa1e0e2948f2e ; affected 4c283fdac08abf3211533f70623c90a34f41d08d < 44c7c901cb368a9f2493748f213b247b5872639f ; affected 4c283fdac08abf3211533f70623c90a34f41d08d < 3b2b93a485fb7a970bc8b5daef16f4cf579d172f ; affected 4c283fdac08abf3211533f70623c90a34f41d08d < 06888d571b513cbfc0b41949948def6cb81021b2
Linux · Linuxaffected 5.5 ; unaffected 0 < 5.5 ; unaffected 5.10.51 ≤ 5.10.* ; unaffected 5.12.18 ≤ 5.12.* ; unaffected 5.13.3 ≤ 5.13.* ; unaffected 5.14 ≤ *

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