{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "a448cb003edcb4b63d0a9c95f3faab724e6150fb"
            },
            {
              "fixed": "82a7ea35a1526bef8ae170c33ff80e5db7728961"
            },
            {
              "fixed": "89a9389ad70d3c69538e59d87df67d407aef4c26"
            },
            {
              "fixed": "3307459eb3583115264421e859858d1f90f3694a"
            },
            {
              "fixed": "b18fc0ab837381c1a6ef28386602cd888f2d9edf"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.7.0"
            },
            {
              "fixed": "6.12.75"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.16"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43318.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix sync handling in amdgpu_dma_buf_move_notify\n\nInvalidating a dmabuf will impact other users of the shared BO.\nIn the scenario where process A moves the BO, it needs to inform\nprocess B about the move and process B will need to update its\npage table.\n\nThe commit fixes a synchronisation bug caused by the use of the\nticket: it made amdgpu_vm_handle_moved behave as if updating\nthe page table immediately was correct but in this case it's not.\n\nAn example is the following scenario, with 2 GPUs and glxgears\nrunning on GPU0 and Xorg running on GPU1, on a system where P2P\nPCI isn't supported:\n\nglxgears:\n  export linear buffer from GPU0 and import using GPU1\n  submit frame rendering to GPU0\n  submit tiled-\u003elinear blit\nXorg:\n  copy of linear buffer\n\nThe sequence of jobs would be:\n  drm_sched_job_run                       # GPU0, frame rendering\n  drm_sched_job_queue                     # GPU0, blit\n  drm_sched_job_done                      # GPU0, frame rendering\n  drm_sched_job_run                       # GPU0, blit\n  move linear buffer for GPU1 access      #\n  amdgpu_dma_buf_move_notify -\u003e update pt # GPU0\n\nIt this point the blit job on GPU0 is still running and would\nlikely produce a page fault.",
  "id": "CVE-2026-43318",
  "modified": "2026-07-15T01:48:57.354512102Z",
  "published": "2026-05-08T13:26:13.557Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3307459eb3583115264421e859858d1f90f3694a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82a7ea35a1526bef8ae170c33ff80e5db7728961"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/89a9389ad70d3c69538e59d87df67d407aef4c26"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b18fc0ab837381c1a6ef28386602cd888f2d9edf"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43318.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43318"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "drm/amdgpu: fix sync handling in amdgpu_dma_buf_move_notify"
}