{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "346492f30ce3581bf5324c4ae417eab8537dc998"
            },
            {
              "fixed": "081ef0e46c9cdd26c0db0ef721470393d36b6655"
            },
            {
              "fixed": "5a4bffd67e94944ed3db26a959346cfb7fabaecd"
            },
            {
              "fixed": "8f4954722eab88e10c4ea0c0d3b1269c31421d3a"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.14.0"
            },
            {
              "fixed": "6.18.33"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63849.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/vcn: set no_user_fence for VCN v5.0.1 enc ring\n\nVCN encoder and decoder rings do not support 64-bit user fence writes,\nreject CS submissions with user fences.\n\n(cherry picked from commit e16be95a2c3ee712b142cb27d2dca0b461181359)",
  "id": "CVE-2026-63849",
  "modified": "2026-07-22T05:29:48.710338180Z",
  "published": "2026-07-19T14:04:41.395Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/081ef0e46c9cdd26c0db0ef721470393d36b6655"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5a4bffd67e94944ed3db26a959346cfb7fabaecd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8f4954722eab88e10c4ea0c0d3b1269c31421d3a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63849.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63849"
    },
    {
      "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:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "drm/amdgpu/vcn: set no_user_fence for VCN v5.0.1 enc ring"
}