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CVE-2026-53374 (GCVE-0-2026-53374)

Vulnerability from cvelistv5 – Published: 2026-07-19 10:01 – Updated: 2026-08-05 12:35
VLAI
Title
drm/amdgpu: zero-initialize GART table on allocation
Summary
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)
Severity
8.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d38ceaf99ed015f2a0b9af3499791bd3a3daae21 , < 40df11255d71b02e20e70579f1b12b687e396e26 (git)
Affected: d38ceaf99ed015f2a0b9af3499791bd3a3daae21 , < 91fbb5e635c8fb1b49e15c19da06480089ef719f (git)
Affected: d38ceaf99ed015f2a0b9af3499791bd3a3daae21 , < 8ae8b9e74bab94aab1d79f1688129bcc61c8b29a (git)
Affected: d38ceaf99ed015f2a0b9af3499791bd3a3daae21 , < b17175d0a375b3ed5e81597dac4983fdb46e478d (git)
Affected: d38ceaf99ed015f2a0b9af3499791bd3a3daae21 , < 791941be5da125d9a1b228582bfdc300c05d05b3 (git)
Affected: d38ceaf99ed015f2a0b9af3499791bd3a3daae21 , < e6c2e6c2e1fa066968a16aca1cb66cd1bdde7741 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.2
Unaffected: 0 , < 4.2 (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.140 , ≤ 6.6.* (semver)
Unaffected: 6.12.90 , ≤ 6.12.* (semver)
Unaffected: 6.18.32 , ≤ 6.18.* (semver)
Unaffected: 7.0.9 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-08-20T08:00:37+00:00",
      "cve": "CVE-2026-53374",
      "id": "CVE-2026-53374",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:fixed": "762",
      "product_status:known_affected": "50",
      "product_status:under_investigation": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/amdgpu: zero-initialize GART table on allocation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53374.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.