CVE-2026-53374

drm/amdgpu: zero-initialize GART table on allocation

HIGH 8.8

En bref

Source
NVD
EPSS
EPSS 0.13 % · centile 2 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: zero-initialize GART table on allocation GART TLB is flushed after unmapping but not after mapping. Since amdgpu_bo_create_kernel() does not zero-initialize the buffer, when a single PTE is written the TLB may speculatively load other uninitialized entries from the same cacheline. Those garbage entries can appear valid, and a subsequent write to another PTE in the same cacheline may cause the GPU to use a stale garbage PTE from the TLB. Fix this by calling memset_io() to zero-initialize the GART table with gart_pte_flags immediately after allocation. Using AMDGPU_GEM_CREATE_VRAM_CLEARED, SDMA-based clear will not work since SDMA needs GART to be initialized to work. (cherry picked from commit d9af8263b82b6eaa60c5718e0c6631c5037e4b24)

Faiblesses (CWE)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 8.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HLinux
CVSS 3.1HIGH 8.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 40df11255d71b02e20e70579f1b12b687e396e26 ; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 91fbb5e635c8fb1b49e15c19da06480089ef719f ; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 8ae8b9e74bab94aab1d79f1688129bcc61c8b29a ; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < b17175d0a375b3ed5e81597dac4983fdb46e478d ; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 791941be5da125d9a1b228582bfdc300c05d05b3 ; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < e6c2e6c2e1fa066968a16aca1cb66cd1bdde7741
Linux · Linuxaffected 4.2 ; unaffected 0 < 4.2 ; unaffected 6.1.175 ≤ 6.1.* ; unaffected 6.6.140 ≤ 6.6.* ; unaffected 6.12.90 ≤ 6.12.* ; unaffected 6.18.32 ≤ 6.18.*

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