drm/radeon: fix potential buffer overflow in ni_set_mc_special_registers() (Linux Linux)

CVE-2022-50185
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.29 % · centile 21 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: drm/radeon: fix potential buffer overflow in ni_set_mc_special_registers() The last case label can write two buffers 'mc_reg_address[j]' and 'mc_data[j]' with 'j' offset equal to SMC_NISLANDS_MC_REGISTER_ARRAY_SIZE since there are no checks for this value in both case labels after the last 'j++'. Instead of changing '>' to '>=' there, add the bounds check at the start of the second 'case' (the first one already has it). Also, remove redundant last checks for 'j' index bigger than array size. The expression is always false. Moreover, before or after the patch 'table->last' can be equal to SMC_NISLANDS_MC_REGISTER_ARRAY_SIZE and it seems it can be a valid value. Detected using the static analysis tool - Svace.

Faiblesses (CWE)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 69e0b57a91adca2e3eb56ed4db39ab90f3ae1043 < ea73869df6ef386fc0feeb28ff66742ca835b18f ; affected 69e0b57a91adca2e3eb56ed4db39ab90f3ae1043 < 1f341053852be76f82610ce47a505d930512f05c ; affected 69e0b57a91adca2e3eb56ed4db39ab90f3ae1043 < db1a9add3f90ff1c641974d5bb910c16b87af4ef ; affected 69e0b57a91adca2e3eb56ed4db39ab90f3ae1043 < 8508d6d23a247c29792ce2fc0df3f3404d6a6a80 ; affected 69e0b57a91adca2e3eb56ed4db39ab90f3ae1043 < deb603c5928e546609c0d5798e231d0205748943 ; affected 69e0b57a91adca2e3eb56ed4db39ab90f3ae1043 < 782e413e38dffd37cc85b08b1ccb982adb4a93ce
Linux · Linuxaffected 3.11 ; unaffected 0 < 3.11 ; unaffected 4.14.291 ≤ 4.14.* ; unaffected 4.19.256 ≤ 4.19.* ; unaffected 5.4.211 ≤ 5.4.* ; unaffected 5.10.137 ≤ 5.10.*

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