{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21"
            },
            {
              "fixed": "40df11255d71b02e20e70579f1b12b687e396e26"
            },
            {
              "fixed": "91fbb5e635c8fb1b49e15c19da06480089ef719f"
            },
            {
              "fixed": "8ae8b9e74bab94aab1d79f1688129bcc61c8b29a"
            },
            {
              "fixed": "b17175d0a375b3ed5e81597dac4983fdb46e478d"
            },
            {
              "fixed": "791941be5da125d9a1b228582bfdc300c05d05b3"
            },
            {
              "fixed": "e6c2e6c2e1fa066968a16aca1cb66cd1bdde7741"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.2.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.140"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.90"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.32"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53374.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: zero-initialize GART table on allocation\n\nGART TLB is flushed after unmapping but not after mapping. Since\namdgpu_bo_create_kernel() does not zero-initialize the buffer, when a\nsingle PTE is written the TLB may speculatively load other uninitialized\nentries from the same cacheline. Those garbage entries can appear valid,\nand a subsequent write to another PTE in the same cacheline may cause the\nGPU to use a stale garbage PTE from the TLB.\n\nFix this by calling memset_io() to zero-initialize the GART table with\ngart_pte_flags immediately after allocation.\n\nUsing AMDGPU_GEM_CREATE_VRAM_CLEARED, SDMA-based clear will not work\nsince SDMA needs GART to be initialized to work.\n\n(cherry picked from commit d9af8263b82b6eaa60c5718e0c6631c5037e4b24)",
  "id": "CVE-2026-53374",
  "modified": "2026-07-22T05:29:55.099612583Z",
  "published": "2026-07-19T10:01:58.292Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/40df11255d71b02e20e70579f1b12b687e396e26"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/791941be5da125d9a1b228582bfdc300c05d05b3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ae8b9e74bab94aab1d79f1688129bcc61c8b29a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/91fbb5e635c8fb1b49e15c19da06480089ef719f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b17175d0a375b3ed5e81597dac4983fdb46e478d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e6c2e6c2e1fa066968a16aca1cb66cd1bdde7741"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53374.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53374"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "drm/amdgpu: zero-initialize GART table on allocation"
}