drm/amdgpu: zero-initialize GART table on allocation
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)
CVE-2026-53374
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-53374
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21",
"lessThan": "40df11255d71b02e20e70579f1b12b687e396e26",
"versionType": "git"
},
{
"status": "affected",
"version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21",
"lessThan": "91fbb5e635c8fb1b49e15c19da06480089ef719f",
"versionType": "git"
},
{
"status": "affected",
"version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21",
"lessThan": "8ae8b9e74bab94aab1d79f1688129bcc61c8b29a",
"versionType": "git"
},
{
"status": "affected",
"version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21",
"lessThan": "b17175d0a375b3ed5e81597dac4983fdb46e478d",
"versionType": "git"
},
{
"status": "affected",
"version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21",
"lessThan": "791941be5da125d9a1b228582bfdc300c05d05b3",
"versionType": "git"
},
{
"status": "affected",
"version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21",
"lessThan": "e6c2e6c2e1fa066968a16aca1cb66cd1bdde7741",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.175",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.140",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.90",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.32",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.9",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-53374
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40814 · Revision 1
- Added to Heist Feed
- Publisher date